1 files changed, 7 insertions, 3 deletions
diff --git a/enum.c b/enum.c
index c7828cdb01..b3a8f9e1d8 100644
--- a/enum.c
+++ b/enum.c
@@ -1069,10 +1069,14 @@ static VALUE
 enum_tally(int argc, VALUE *argv, VALUE obj)
 {
     VALUE hash;
-    if (rb_check_arity(argc, 0, 1))
-        hash = rb_check_hash_type(argv[0]);
-    else
+    if (rb_check_arity(argc, 0, 1)) {
+        hash = rb_convert_type(argv[0], T_HASH, "Hash", "to_hash");
+        rb_check_frozen(hash);
+    }
+    else {
         hash = rb_hash_new();
+    }
+
     return enum_hashify_into(obj, 0, 0, tally_i, hash);
 }