1 files changed, 1 insertions, 1 deletions
diff --git a/pack.c b/pack.c
index 376d8ce1c9..f475f26f9b 100644
--- a/pack.c
+++ b/pack.c
@@ -2020,7 +2020,7 @@ uv_to_utf8(char *buf, unsigned long uv)
     rb_raise(rb_eRangeError, "pack(U): value out of range");
 }
 
-static const long utf8_limits[] = {
+static const unsigned long utf8_limits[] = {
     0x0,			/* 1 */
     0x80,			/* 2 */
     0x800,			/* 3 */