diff --git a/src/test/resources/RelAstPreprocessor/config.yaml b/src/test/resources/RelAstPreprocessor/config.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..0122f6c7a6cfb15f71004cc97bf1a413d6b55b2f
--- /dev/null
+++ b/src/test/resources/RelAstPreprocessor/config.yaml
@@ -0,0 +1,7 @@
+- name: "RelAST Preprocessor Grammar from submodule (null)"
+  in: "../../../../relast.preprocessor/src/main/jastadd/"
+  args:
+    - "--inputBaseDir=../../../../relast.preprocessor/src/main/jastadd/"
+    - "--outputBaseDir=out"
+    - "--errorHandling=null"
+    - "RelAst.relast"