diff --git a/tests/conform/Makefile.am b/tests/conform/Makefile.am
index c41b69e38..6865fd014 100644
--- a/tests/conform/Makefile.am
+++ b/tests/conform/Makefile.am
@@ -88,3 +88,5 @@ $(srcdir)/.gitignore: Makefile
 gitignore: $(srcdir)/.gitignore
 
 all-am: gitignore
+
+DISTCLEANFILES += .gitignore