diff --git a/test-gen-plugin/src/main/java/com/dylibso/chicory/maven/JavaTestGen.java b/test-gen-plugin/src/main/java/com/dylibso/chicory/maven/JavaTestGen.java
index 0554fa355..0832665d0 100644
--- a/test-gen-plugin/src/main/java/com/dylibso/chicory/maven/JavaTestGen.java
+++ b/test-gen-plugin/src/main/java/com/dylibso/chicory/maven/JavaTestGen.java
@@ -192,7 +192,8 @@ private Expression generateModuleInstantiation(Command cmd, File folder) {
         assert(cmd.getType() == CommandType.MODULE);
 
         var relativeFile = folder.toPath().resolve(cmd.getFilename()).toFile().getAbsolutePath()
-                .replaceFirst(baseDir.getAbsolutePath() + "/", "");
+                .replaceFirst(baseDir.getAbsolutePath() + File.pathSeparator, "")
+                .replace("\\", "\\\\"); // Win compat
 
         var additionalParam = "";
         if (cmd.getModuleType() != null) {