diff --git a/ct-ng.in b/ct-ng.in
index 8a407ba8..a0568945 100644
--- a/ct-ng.in
+++ b/ct-ng.in
@@ -166,7 +166,7 @@ clean::
 	@$(ECHO) "  CLEAN build dir"
 	$(SILENT)[ ! -d targets ] || chmod -R u+w targets
 	$(SILENT)[ ! -d .build  ] || chmod -R u+w .build
-	$(SILENT)rm -rf targets .build
+	$(SILENT)rm -rf targets .build .build-all
 
 PHONY += distclean
 distclean:: clean