diff --git a/libraries/liblunicode/Makefile.in b/libraries/liblunicode/Makefile.in
index 6bf119d2ff..5316d023ae 100644
--- a/libraries/liblunicode/Makefile.in
+++ b/libraries/liblunicode/Makefile.in
@@ -42,6 +42,6 @@ install-local: $(PROGRAMS) FORCE
 $(XXSRCS) : .links
 
 clean-local: FORCE
-	@$(RM) *.dat .links
+	@$(RM) *.dat .links $(XXHEADERS)
 
 depend-common: .links