1 files changed, 1 insertions, 1 deletions
diff --git a/util.c b/util.c
index bb4a63bc9b..d6b06402d5 100644
--- a/util.c
+++ b/util.c
@@ -445,7 +445,7 @@ ruby_qsort(void* base, const size_t nel, const size_t size,
   register int t, eq_l, eq_r;       	/* eq_l: all items in left group are equal to S */
   char *L = base;                    	/* left end of curren region */
   char *R = (char*)base + size*(nel-1); /* right end of current region */
-  int  chklim = 63;                     /* threshold of ordering element check */
+  size_t chklim = 63;                   /* threshold of ordering element check */
   stack_node stack[32], *top = stack;   /* 32 is enough for 32bit CPU */
   int mmkind;
   size_t high, low, n;