diff --git a/lib/command.c b/lib/command.c
index 37603c46f8..015d97266d 100644
--- a/lib/command.c
+++ b/lib/command.c
@@ -2020,6 +2020,7 @@ cmd_entry_function_desc (const char *src, struct cmd_token *token)
 
       default:
         assert(0);
+        return NULL;
     }
 }