diff --git a/CHANGELOG.md b/CHANGELOG.md
index ac2d79c..a0fa067 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,7 @@
 ## v3.9.2
 ### Bug Fixes
 * Fix shader analyzer not handling `_fragment` and other per pass suffixes for `shader_feature` pragmas.
+* Fix shader analyzer parsing ShaderLab case sensitive even though its not supposed to be. [(more)](https://github.com/d4rkc0d3r/d4rkAvatarOptimizer/pull/130)
 
 ## v3.9.1
 ### Bug Fixes
diff --git a/Editor/ShaderAnalyzer.cs b/Editor/ShaderAnalyzer.cs
index e297f84..7594e8e 100644
--- a/Editor/ShaderAnalyzer.cs
+++ b/Editor/ShaderAnalyzer.cs
@@ -1197,7 +1197,8 @@ private void SemanticParseShader()
             for (int lineIndex = 0; lineIndex < lines.Count; lineIndex++)
             {
                 string line = lines[lineIndex];
-                if (line == "Properties")
+                string lowerLine = line.ToLowerInvariant();
+                if (lowerLine == "properties")
                 {
                     foundProperties = true;
                     if (lines[lineIndex + 1] != "{")
@@ -1242,7 +1243,7 @@ private void SemanticParseShader()
                         }
                     }
                 }
-                else if (line == "Tags")
+                else if (lowerLine == "tags")
                 {
                     if (lines[lineIndex + 1] != "{")
                     {
@@ -1304,7 +1305,7 @@ private void SemanticParseShader()
                     output.Add(line == "CGPROGRAM" ? "ENDCG" : "ENDHLSL");
                     currentPass.codeBlockLineCount = output.Count - currentPass.startLineIndex - currentPass.codeBlockStartIndex;
                 }
-                else if (line == "Pass")
+                else if (lowerLine == "pass")
                 {
                     if (lines[lineIndex + 1] != "{")
                     {
@@ -1315,10 +1316,10 @@ private void SemanticParseShader()
                     currentPass.startLineIndex = output.Count;
                     passCurlyBraceDepth = 1;
                     lineIndex++;
-                    output.Add($"Pass//{parsedShader.passes.Count-1}");
+                    output.Add($"pass//{parsedShader.passes.Count-1}");
                     output.Add("{");
                 }
-                else if (line.StartsWithSimple("UsePass"))
+                else if (lowerLine.StartsWithSimple("usepass"))
                 {
                     throw new ParserException("UsePass is not supported.");
                 }
@@ -1337,7 +1338,7 @@ private void SemanticParseShader()
                             bool hasColorMask0 = false;
                             for (int i = currentPass.startLineIndex; i < output.Count; i++)
                             {
-                                if (output[i].StartsWithSimple("ColorMask") && output[i].EndsWith("0"))
+                                if (output[i].ToLowerInvariant().StartsWithSimple("colormask") && output[i].EndsWith("0"))
                                 {
                                     hasColorMask0 = true;
                                     break;
@@ -1374,7 +1375,7 @@ private void SemanticParseShader()
                         output.Add(line);
                     }
                 }
-                else if (currentPass != null && line.StartsWithSimple("Name"))
+                else if (currentPass != null && lowerLine.StartsWithSimple("name"))
                 {
                     currentPass.name = line.Substring(5).Trim('\t', ' ', '"').ToUpperInvariant();
                 }
@@ -1392,7 +1393,7 @@ private void SemanticParseShader()
                                 string propName = match.Groups[1].Value;
                                 if (parsedShader.propertyTable.TryGetValue(propName, out var prop))
                                 {
-                                    prop.shaderLabParams.Add(shaderLabParam);
+                                    prop.shaderLabParams.Add(shaderLabParam.ToLowerInvariant());
                                 }
                             }
                         }
@@ -1401,7 +1402,7 @@ private void SemanticParseShader()
             }
             if (!foundProperties)
             {
-                output.Insert(2, "Properties");
+                output.Insert(2, "properties");
                 output.Insert(3, "{");
                 output.Insert(4, "}");
                 foreach (var pass in parsedShader.passes)
@@ -3177,7 +3178,7 @@ private void Run()
                 ParseAndEvaluateIfex(lines, ref lineIndex, output);
                 string line = lines[lineIndex++];
                 output.Add(line);
-                if (line == "Properties")
+                if (line.ToLowerInvariant() == "properties")
                 {
                     break;
                 }
@@ -3273,9 +3274,10 @@ private void Run()
             {
                 ParseAndEvaluateIfex(lines, ref lineIndex, output);
                 string line = lines[lineIndex];
-                if (line.StartsWithSimple("CustomEditor"))
+                string lowerLine = line.ToLowerInvariant();
+                if (lowerLine.StartsWithSimple("customeditor"))
                     continue;
-                if (line.StartsWithSimple("Pass//"))
+                if (lowerLine.StartsWithSimple("pass//"))
                 {
                     passID = int.Parse(line.Substring(6));
                     currentPass = parsedShader.passes[passID];