1 files changed, 4 insertions, 4 deletions
diff --git a/object.c b/object.c
index f51d7d43fe..b04843eec8 100644
--- a/object.c
+++ b/object.c
@@ -3043,8 +3043,8 @@ rb_to_integer(VALUE val, const char *method)
     if (FIXNUM_P(val)) return val;
     if (RB_TYPE_P(val, T_BIGNUM)) return val;
     v = convert_type(val, "Integer", method, TRUE);
-    if (!rb_obj_is_kind_of(v, rb_cInteger)) {
-	conversion_mismatch(val, "Integer", method, v);
+    if (!RB_INTEGER_TYPE_P(v)) {
+        conversion_mismatch(val, "Integer", method, v);
     }
     return v;
 }
@@ -3067,8 +3067,8 @@ rb_check_to_integer(VALUE val, const char *method)
     if (FIXNUM_P(val)) return val;
     if (RB_TYPE_P(val, T_BIGNUM)) return val;
     v = convert_type(val, "Integer", method, FALSE);
-    if (!rb_obj_is_kind_of(v, rb_cInteger)) {
-	return Qnil;
+    if (!RB_INTEGER_TYPE_P(v)) {
+        return Qnil;
     }
     return v;
 }