diff --git a/lib/c_glib/test/Makefile.am b/lib/c_glib/test/Makefile.am
index 0e8de86..dc9432e 100755
--- a/lib/c_glib/test/Makefile.am
+++ b/lib/c_glib/test/Makefile.am
@@ -237,7 +237,7 @@
 	    ${$<_VALGRIND_LEAK_OPTS}  ./$<
 
 clean-local:
-	$(RM) -r gen-c_glib gen-cpp
+	$(RM) gen-c_glib/* gen-cpp/*
 
 CLEANFILES =                            \
     *.bb                                \