diff --git a/tools/test/resources/mbed-os.lib/TARGET_FRDM/modules.json b/tools/test/resources/mbed-os.lib/TARGET_FRDM/modules.json
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/tools/test/resources/resource_test.py b/tools/test/resources/resource_test.py
index 5fcf8f1684..ddf0cf6ff5 100644
--- a/tools/test/resources/resource_test.py
+++ b/tools/test/resources/resource_test.py
@@ -126,6 +126,10 @@ class ResourcesTest(unittest.TestCase):
             join("mbed-os", "platform", "bm", "bm.cpp")
             in res.get_file_names(FileType.CPP_SRC)
         )
+        assert(
+            join("mbed-os", "TARGET_FRDM", "not-main.cpp")
+            in res.get_file_names(FileType.CPP_SRC)
+        )
 
 
 if __name__ == '__main__':