diff --git a/tools/ucl/src/Makefile b/tools/ucl/src/Makefile
index 3a13acc47e..01fb66f513 100644
--- a/tools/ucl/src/Makefile
+++ b/tools/ucl/src/Makefile
@@ -56,5 +56,5 @@ clean:
 
 $(OUT):
 	@echo MKDIR $(OUT)
-	$(SILENT)mkdir $(OUT)
+	$(SILENT)mkdir -p $(OUT)