diff --git a/Makefile b/Makefile
index 5f4deba..cbaa8e4 100644
--- a/Makefile
+++ b/Makefile
@@ -48,7 +48,7 @@ install:
 
 .PHONY: check_format
 check_format:
-	@echo "Not implemented!"
+	gofmt -d -e cmd/ pkg/
 
 .PHONY: check_linting
 check_linting: