diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8ab7d4d..69526a7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+
+- Fixed issue with `New-DscResourceWikiPage` where Test-Path was case sensitive
+  on Linux machines and therefore didn't find some Readme.md files.
+
 ## [0.5.1] - 2020-05-01
 
 ### Added
diff --git a/RequiredModules.psd1 b/RequiredModules.psd1
index 90338d5..84a412c 100644
--- a/RequiredModules.psd1
+++ b/RequiredModules.psd1
@@ -9,7 +9,7 @@
 
     InvokeBuild                 = 'latest'
     PSScriptAnalyzer            = 'latest'
-    Pester                      = 'latest'
+    Pester                      = '4.10.1'
     Plaster                     = 'latest'
     ModuleBuilder               = '1.0.0'
     Sampler                     = 'latest'
diff --git a/source/Public/New-DscResourceWikiPage.ps1 b/source/Public/New-DscResourceWikiPage.ps1
index 83f9cf4..4dce175 100644
--- a/source/Public/New-DscResourceWikiPage.ps1
+++ b/source/Public/New-DscResourceWikiPage.ps1
@@ -49,9 +49,9 @@ function New-DscResourceWikiPage
                     -and ($null -ne $_.FriendlyName)
             }
 
-        $descriptionPath = Join-Path -Path $mofSchemaFile.DirectoryName -ChildPath 'readme.md'
+        [System.Array]$readmeFile = Get-ChildItem -Path $mofSchemaFile.DirectoryName | Where-Object -FilterScript { $_.Name -like 'readme.md' }
 
-        if (Test-Path -Path $descriptionPath)
+        if ($readmeFile.Count -eq 1)
         {
             Write-Verbose -Message ($script:localizedData.GenerateWikiPageMessage -f $mofSchema.FriendlyName)
 
@@ -91,7 +91,7 @@ function New-DscResourceWikiPage
                 $null = $output.AppendLine('|')
             }
 
-            $descriptionContent = Get-Content -Path $descriptionPath -Raw
+            $descriptionContent = Get-Content -Path $readmeFile.FullName -Raw
 
             # Change the description H1 header to an H2
             $descriptionContent = $descriptionContent -replace '# Description', '## Description'
@@ -135,6 +135,10 @@ function New-DscResourceWikiPage
                 -Encoding utf8 `
                 -Force
         }
+        elseif ($readmeFile.Count -gt 1)
+        {
+            Write-Warning -Message ($script:localizedData.MultipleDescriptionFileFoundWarning -f $mofSchema.FriendlyName, $readmeFile.Count)
+        }
         else
         {
             Write-Warning -Message ($script:localizedData.NoDescriptionFileFoundWarning -f $mofSchema.FriendlyName)
diff --git a/source/en-US/DscResource.DocGenerator.strings.psd1 b/source/en-US/DscResource.DocGenerator.strings.psd1
index e5e22fa..d6bf756 100644
--- a/source/en-US/DscResource.DocGenerator.strings.psd1
+++ b/source/en-US/DscResource.DocGenerator.strings.psd1
@@ -1,10 +1,11 @@
 # English strings
 ConvertFrom-StringData @'
-    FoundMofFilesMessage          = Found {0} MOF files in path '{1}'.
-    GenerateHelpDocumentMessage   = Generating help document for '{0}'.
-    OutputHelpDocumentMessage     = Outputting help document to '{0}'.
-    GenerateWikiPageMessage       = Generating wiki page for '{0}'.
-    OutputWikiPageMessage         = Outputting wiki page to '{0}'.
-    NoDescriptionFileFoundWarning = No README.md description file found for '{0}', skipping.
-    NoExampleFileFoundWarning     = No Example files found for resource '{0}'.
+    FoundMofFilesMessage                = Found {0} MOF files in path '{1}'.
+    GenerateHelpDocumentMessage         = Generating help document for '{0}'.
+    OutputHelpDocumentMessage           = Outputting help document to '{0}'.
+    GenerateWikiPageMessage             = Generating wiki page for '{0}'.
+    OutputWikiPageMessage               = Outputting wiki page to '{0}'.
+    NoDescriptionFileFoundWarning       = No README.md description file found for '{0}', skipping.
+    MultipleDescriptionFileFoundWarning = {1} README.md description files found for '{0}', skipping.
+    NoExampleFileFoundWarning           = No Example files found for resource '{0}'.
 '@
diff --git a/tests/unit/public/New-DscResourceWikiPage.Tests.ps1 b/tests/unit/public/New-DscResourceWikiPage.Tests.ps1
index 08e35be..a0ce1cb 100644
--- a/tests/unit/public/New-DscResourceWikiPage.Tests.ps1
+++ b/tests/unit/public/New-DscResourceWikiPage.Tests.ps1
@@ -147,6 +147,7 @@ Configuration Example
 
         # General mock values
         $script:mockReadmePath = Join-Path -Path $script:mockSchemaFolder -ChildPath 'readme.md'
+        $script:mockReadmeFolder = $script:mockSchemaFolder
         $script:mockOutputFile = Join-Path -Path $script:mockOutputPath -ChildPath "$($script:mockResourceName).md"
         $script:mockSavePath = Join-Path -Path $script:mockOutputPath -ChildPath "$($script:mockResourceName).md"
         $script:mockDestinationModulePathSavePath = Join-Path -Path $script:mockDestinationModulePath -ChildPath "DscResources\$($script:mockResourceName)\en-US\about_$($script:mockResourceName).help.txt"
@@ -197,6 +198,10 @@ Configuration Example
             $Path -eq $script:expectedSchemaPath
         }
 
+        $script:getChildItemDescription_parameterFilter = {
+            $Path -eq $script:mockReadmeFolder
+        }
+
         $script:getChildItemExample_parameterFilter = {
             $Path -eq $script:expectedExamplePath
         }
@@ -235,6 +240,10 @@ Configuration Example
             $Message -eq ($script:localizedData.NoDescriptionFileFoundWarning -f $script:mockResourceName)
         }
 
+        $script:writeWarningMultipleDescription_parameterFilter = {
+            $Message -eq ($script:localizedData.MultipleDescriptionFileFoundWarning -f $script:mockResourceName, 2)
+        }
+
         $script:writeWarningExample_parameterFilter = {
             $Message -eq ($script:localizedData.NoExampleFileFoundWarning -f $script:mockResourceName)
         }
@@ -257,7 +266,7 @@ Configuration Example
             Verbose = $true
         }
 
-        Context 'When there is no schemas found in the module folder' {
+        Context 'When there are no schemas found in the module folder' {
             BeforeAll {
                 Mock `
                     -CommandName Get-ChildItem `
@@ -297,9 +306,9 @@ Configuration Example
                     -MockWith { $script:mockGetMofSchemaObject }
 
                 Mock `
-                    -CommandName Test-Path `
-                    -ParameterFilter $script:getTestPathReadme_parameterFilter `
-                    -MockWith { $false }
+                    -CommandName Get-ChildItem `
+                    -ParameterFilter $script:getChildItemDescription_parameterFilter `
+                    -MockWith { $null }
 
                 Mock `
                     -CommandName Out-File `
@@ -320,6 +329,11 @@ Configuration Example
                     -ParameterFilter $script:getChildItemSchema_parameterFilter `
                     -Exactly -Times 1
 
+                Assert-MockCalled `
+                    -CommandName Get-ChildItem `
+                    -ParameterFilter $script:getChildItemDescription_parameterFilter `
+                    -Exactly -Times 1
+
                 Assert-MockCalled `
                     -CommandName Write-Warning `
                     -ParameterFilter $script:writeWarningDescription_parameterFilter `
@@ -332,6 +346,61 @@ Configuration Example
             }
         }
 
+        Context 'When there are multiple resource descriptions found' {
+            BeforeAll {
+                Mock `
+                    -CommandName Get-ChildItem `
+                    -ParameterFilter $script:getChildItemSchema_parameterFilter `
+                    -MockWith { $script:mockSchemaFiles }
+
+                Mock `
+                    -CommandName Get-MofSchemaObject `
+                    -ParameterFilter $script:getMofSchemaObjectSchema_parameterFilter `
+                    -MockWith { $script:mockGetMofSchemaObject }
+
+                Mock `
+                    -CommandName Get-ChildItem `
+                    -ParameterFilter $script:getChildItemDescription_parameterFilter `
+                    -MockWith { return @(
+                                    @{ Name = 'README.MD'; FullName = $script:mockReadmePath },
+                                    @{ Name = 'Readme.md'; FullName = $script:mockReadmePath }) }
+
+                Mock `
+                    -CommandName Out-File `
+                    -ParameterFilter $script:outFile_parameterFilter
+
+                Mock `
+                    -CommandName Write-Warning `
+                    -ParameterFilter $script:writeWarningMultipleDescription_parameterFilter
+            }
+
+            It 'Should not throw an exception' {
+                { New-DscResourceWikiPage @script:newDscResourceWikiPageOutput_parameters } | Should -Not -Throw
+            }
+
+            It 'Should call the expected mocks ' {
+                Assert-MockCalled `
+                    -CommandName Get-ChildItem `
+                    -ParameterFilter $script:getChildItemSchema_parameterFilter `
+                    -Exactly -Times 1
+
+                Assert-MockCalled `
+                    -CommandName Get-ChildItem `
+                    -ParameterFilter $script:getChildItemDescription_parameterFilter `
+                    -Exactly -Times 1
+
+                Assert-MockCalled `
+                    -CommandName Write-Warning `
+                    -ParameterFilter $script:writeWarningMultipleDescription_parameterFilter `
+                    -Exactly -Times 1
+
+                Assert-MockCalled `
+                    -CommandName Out-File `
+                    -ParameterFilter $script:outFile_parameterFilter `
+                    -Exactly -Times 0
+            }
+        }
+
         Context 'When there is no resource example file found' {
             BeforeAll {
                 Mock `
@@ -345,9 +414,9 @@ Configuration Example
                     -MockWith { $script:mockGetMofSchemaObject }
 
                 Mock `
-                    -CommandName Test-Path `
-                    -ParameterFilter $script:getTestPathReadme_parameterFilter `
-                    -MockWith { $true }
+                    -CommandName Get-ChildItem `
+                    -ParameterFilter $script:getChildItemDescription_parameterFilter `
+                    -MockWith { return @(@{ Name = 'README.MD'; FullName = $script:mockReadmePath }) }
 
                 Mock `
                     -CommandName Get-Content `
@@ -380,6 +449,11 @@ Configuration Example
                     -ParameterFilter $script:getChildItemSchema_parameterFilter `
                     -Exactly -Times 1
 
+                Assert-MockCalled `
+                    -CommandName Get-ChildItem `
+                    -ParameterFilter $script:getChildItemDescription_parameterFilter `
+                    -Exactly -Times 1
+
                 Assert-MockCalled `
                     -CommandName Get-Content `
                     -ParameterFilter $script:getContentReadme_parameterFilter `
@@ -425,9 +499,10 @@ Configuration Example
                     -MockWith { $script:mockGetMofSchemaObject }
 
                 Mock `
-                    -CommandName Test-Path `
-                    -ParameterFilter $script:getTestPathReadme_parameterFilter `
-                    -MockWith { $true }
+                    -CommandName Get-ChildItem `
+                    -ParameterFilter $script:getChildItemDescription_parameterFilter `
+                    -MockWith { return @(@{ Name = 'README.MD'; FullName = $script:mockReadmePath }) }
+
 
                 Mock `
                     -CommandName Get-Content `
@@ -479,8 +554,8 @@ Configuration Example
                     -Exactly -Times 1
 
                 Assert-MockCalled `
-                    -CommandName Test-Path `
-                    -ParameterFilter $script:getTestPathReadme_parameterFilter `
+                    -CommandName Get-ChildItem `
+                    -ParameterFilter $script:getChildItemDescription_parameterFilter `
                     -Exactly -Times 1
 
                 Assert-MockCalled `
@@ -523,9 +598,9 @@ Configuration Example
                     -MockWith { $script:mockGetMofSchemaObject }
 
                 Mock `
-                    -CommandName Test-Path `
-                    -ParameterFilter $script:getTestPathReadme_parameterFilter `
-                    -MockWith { $true }
+                    -CommandName Get-ChildItem `
+                    -ParameterFilter $script:getChildItemDescription_parameterFilter `
+                    -MockWith { return @(@{ Name = 'README.MD'; FullName = $script:mockReadmePath }) }
 
                 Mock `
                     -CommandName Get-Content `
@@ -577,8 +652,8 @@ Configuration Example
                     -Exactly -Times 1
 
                 Assert-MockCalled `
-                    -CommandName Test-Path `
-                    -ParameterFilter $script:getTestPathReadme_parameterFilter `
+                    -CommandName Get-ChildItem `
+                    -ParameterFilter $script:getChildItemDescription_parameterFilter `
                     -Exactly -Times 1
 
                 Assert-MockCalled `