diff --git a/Makefile b/Makefile
index 981e93e..e1271c2 100644
--- a/Makefile
+++ b/Makefile
@@ -42,7 +42,7 @@ format: # format code.
 
 .PHONY: add-copyright
 add-copyright: # add license to file headers.
-	@addlicense -v -f $(ROOT_DIR)/LICENSE  -ignore deployment/** -ignore migrations/** -ignore $(OUTPUT_DIR) $(ROOT_DIR)
+	addlicense -v -f $(ROOT_DIR)/LICENSE -ignore deployment/** -ignore migrations/** .
 
 .PHONY: swagger
 swagger: # Run swagger.