diff --git a/apex/builder.go b/apex/builder.go
index 8ae2b5c..f245ca7 100644
--- a/apex/builder.go
+++ b/apex/builder.go
@@ -160,7 +160,7 @@
 			`echo -e "New unexpected files were added to ${apex_module_name}." ` +
 			` "To fix the build run following command:" && ` +
 			`echo "system/apex/tools/update_whitelist.sh ${whitelisted_files_file} ${image_content_file}" && ` +
-			`exit 1)`,
+			`exit 1); touch ${out}`,
 		Description: "Diff ${image_content_file} and ${whitelisted_files_file}",
 	}, "image_content_file", "whitelisted_files_file", "apex_module_name")
 )