diff --git a/inject/tools/src/main/java/io/helidon/inject/tools/CodeGenFiler.java b/inject/tools/src/main/java/io/helidon/inject/tools/CodeGenFiler.java
index d7451576208..ef0e16bee47 100644
--- a/inject/tools/src/main/java/io/helidon/inject/tools/CodeGenFiler.java
+++ b/inject/tools/src/main/java/io/helidon/inject/tools/CodeGenFiler.java
@@ -477,6 +477,7 @@ private Filer scratchFiler() throws IOException {
     private Optional<Path> codegenResourceFilerOut(String outPath,
                                                    String body,
                                                    Optional<Function<InputStream, String>> optFnUpdater) {
+        outPath = outPath.replace(File.separator, "/");
         Messager messager = messager();
         if (!filerWriterEnabled()) {
             messager.log("(disabled) Writing " + outPath + " with:\n" + body);