diff --git a/.github/workflows/Test.yml b/.github/workflows/Test.yml
index 91a9d9b..31620bc 100644
--- a/.github/workflows/Test.yml
+++ b/.github/workflows/Test.yml
@@ -22,6 +22,9 @@ jobs:
         julia-arch: [x64]
         os: [ubuntu-latest, windows-latest]
         experimental: [false]
+        include:
+          - os: windows-latest
+            julia-arch: x86
 
     steps:
       # Checks-out your repository
diff --git a/src/FMI2/int.jl b/src/FMI2/int.jl
index 444914b..d1815cd 100644
--- a/src/FMI2/int.jl
+++ b/src/FMI2/int.jl
@@ -71,11 +71,14 @@ function fmi2Instantiate!(fmu::FMU2;
     ptrLogger = @cfunction(fmi2CallbackLogger, Cvoid, (Ptr{FMU2ComponentEnvironment}, Ptr{Cchar}, Cuint, Ptr{Cchar}, Ptr{Cchar}))
     if externalCallbacks
         if fmu.callbackLibHandle == C_NULL
-            @assert Sys.WORD_SIZE == 64 "`externalCallbacks=true` is only supported for 64-bit."
-
+            @assert Sys.WORD_SIZE == 64 || (Sys.iswindows() && Sys.WORD_SIZE == 32) "`externalCallbacks=true` is only supported for 64-bit and 32-Bit Windows"
             cbLibPath = CB_LIB_PATH
             if Sys.iswindows()
-                cbLibPath = joinpath(cbLibPath, "win64", "callbackFunctions.dll")
+                if Sys.WORD_SIZE == 64
+                    cbLibPath = joinpath(cbLibPath, "win64", "callbackFunctions.dll")
+                else
+                    cbLibPath = joinpath(cbLibPath, "win32", "callbackFunctions.dll")
+                end
             elseif Sys.islinux()
                 cbLibPath = joinpath(cbLibPath, "linux64", "libcallbackFunctions.so")
             elseif Sys.isapple()