diff --git a/build.assets/grpcbox.mk b/build.assets/grpcbox.mk
index 6b49e1d580c16..766c1917822f6 100644
--- a/build.assets/grpcbox.mk
+++ b/build.assets/grpcbox.mk
@@ -25,7 +25,7 @@ GRPCBOX_RUN := $(DOCKER) run -it --rm -v "$$(pwd)/../:/workdir" -w /workdir $(GR
 # It's leaner, meaner, faster and not supposed to compile code.
 .PHONY: grpcbox
 grpcbox:
-	$(DOCKER) buildx build \
+	$(DOCKER) build \
 		--build-arg BUF_VERSION=$(BUF_VERSION) \
 		-f Dockerfile-grpcbox \
 		-t "$(GRPCBOX)" \