diff --git a/common/include/common/option.h b/common/include/common/option.h
index 1ebe12be..cb94a007 100644
--- a/common/include/common/option.h
+++ b/common/include/common/option.h
@@ -49,7 +49,7 @@ struct Option
   char * module;
   char * name;
   char * description;
-  const char shortopt;
+  char shortopt;
   bool preset;
   void * opaque;