1 files changed, 1 insertions, 1 deletions
diff --git a/src/print.c b/src/print.c
index 505597935..e6873913b 100644
--- a/src/print.c
+++ b/src/print.c
@@ -13,7 +13,7 @@ printstr(mrb_state *mrb, mrb_value obj)
 {
   struct RString *str;
   char *s;
-  size_t len;
+  int len;
 
   if (mrb_type(obj) == MRB_TT_STRING) {
     str = mrb_str_ptr(obj);