diff --git a/mrbgems/mruby-sprintf/src/sprintf.c b/mrbgems/mruby-sprintf/src/sprintf.c
index 9f7fb59d1..f49c3d6f8 100644
--- a/mrbgems/mruby-sprintf/src/sprintf.c
+++ b/mrbgems/mruby-sprintf/src/sprintf.c
@@ -1090,7 +1090,6 @@ retry:
       }
       break;
     }
-    flags = FNONE;
   }
 
   sprint_exit: