diff --git a/common/common.h b/common/common.h
index e9fdfc212..343b27217 100644
--- a/common/common.h
+++ b/common/common.h
@@ -110,7 +110,7 @@ struct gpt_params {
     std::string image = ""; // path to an image file
 };
 
-bool gpt_params_parse_ex(int argc, char** argv, gpt_params& params);
+bool gpt_params_parse_ex(int argc, char ** argv, gpt_params & params);
 
 bool gpt_params_parse(int argc, char ** argv, gpt_params & params);