1 files changed, 3 insertions, 2 deletions
diff --git a/compile.c b/compile.c
index 54b513c4c8..975167c3ec 100644
--- a/compile.c
+++ b/compile.c
@@ -1936,7 +1936,8 @@ iseq_insns_unification(rb_iseq_t *iseq, LINK_ANCHOR *anchor)
 #if OPT_INSTRUCTIONS_UNIFICATION
     LINK_ELEMENT *list;
     INSN *iobj, *niobj;
-    int id, j, k;
+    int id, k;
+    intptr_t j;
 
     list = FIRST_ELEMENT(anchor);
     while (list) {
@@ -1945,7 +1946,7 @@ iseq_insns_unification(rb_iseq_t *iseq, LINK_ANCHOR *anchor)
 	    id = iobj->insn_id;
 	    if (unified_insns_data[id] != 0) {
 		const int *const *entry = unified_insns_data[id];
-		for (j = 1; j < (int)entry[0]; j++) {
+		for (j = 1; j < (intptr_t)entry[0]; j++) {
 		    const int *unified = entry[j];
 		    LINK_ELEMENT *li = list->next;
 		    for (k = 2; k < unified[1]; k++) {