diff --git a/Makefile b/Makefile
index 2f7a1b6a4..4001b9b01 100644
--- a/Makefile
+++ b/Makefile
@@ -451,7 +451,7 @@ clean: wire-clean
 	find . -name '*.nccout' -delete
 
 update-mocks/%: %
-	@tools/update-mocks.sh "$*"
+	@MAKE=$(MAKE) tools/update-mocks.sh "$*"
 
 unittest/%: %
 	$(VG) $(VG_TEST_ARGS) $* > /dev/null