diff --git a/Rules.mk b/Rules.mk
index c634ed033..9a5ccccab 100644
--- a/Rules.mk
+++ b/Rules.mk
@@ -261,6 +261,7 @@ confclean: clean
 	rm -rf .dep .uic
 
 distclean: confclean
+	$(MAKE) -C Documentation clean
 	rm -f $(CREATOR_FILES)
 
 release: