1 files changed, 1 insertions, 1 deletions
diff --git a/sprintf.c b/sprintf.c
index bceaf17a3f..858fa348b5 100644
--- a/sprintf.c
+++ b/sprintf.c
@@ -256,7 +256,7 @@ rb_f_sprintf(argc, argv)
 	  case 's':
 	    {
 		VALUE arg = GETARG();
-		int len;
+		long len;
 
 		str = rb_obj_as_string(arg);
 		if (OBJ_TAINTED(str)) tainted = 1;