diff --git a/unittests/test_directories/example_substitutions/substitutions_parents.yml b/unittests/test_directories/example_substitutions/substitutions_parents.yml
index ee999b192dd5d735c6befbc001df633431c783ce..ef825e2557c99ba57f137b1629db862b6b46693e 100644
--- a/unittests/test_directories/example_substitutions/substitutions_parents.yml
+++ b/unittests/test_directories/example_substitutions/substitutions_parents.yml
@@ -30,3 +30,9 @@ ExperimentalData:  # name of the converter
         RecordThatGetsParentsLater:
           parents:
           - Month_$month  # This adds a special parent as record type
+    OtherFile:
+      type: SimpleFile
+      match: ".*\\.data"
+      records:
+        RecordThatGetsParentsLater:
+          someId: 23