diff --git a/enum.c b/enum.c
index a739d335a9..5ba409250a 100644
--- a/enum.c
+++ b/enum.c
@@ -611,6 +611,15 @@ enum_to_a(int argc, VALUE *argv, VALUE obj)
     return ary;
 }
 
+static VALUE
+enum_hashify(VALUE obj, int argc, const VALUE *argv, rb_block_call_func *iter)
+{
+    VALUE hash = rb_hash_new();
+    rb_block_call(obj, id_each, argc, argv, iter, hash);
+    OBJ_INFECT(hash, obj);
+    return hash;
+}
+
 static VALUE
 enum_to_h_i(RB_BLOCK_CALL_FUNC_ARGLIST(i, hash))
 {
@@ -647,11 +656,8 @@ enum_to_h_ii(RB_BLOCK_CALL_FUNC_ARGLIST(i, hash))
 static VALUE
 enum_to_h(int argc, VALUE *argv, VALUE obj)
 {
-    VALUE hash = rb_hash_new();
     rb_block_call_func *iter = rb_block_given_p() ? enum_to_h_ii : enum_to_h_i;
-    rb_block_call(obj, id_each, argc, argv, iter, hash);
-    OBJ_INFECT(hash, obj);
-    return hash;
+    return enum_hashify(obj, argc, argv, iter);
 }
 
 static VALUE
@@ -924,15 +930,9 @@ group_by_i(RB_BLOCK_CALL_FUNC_ARGLIST(i, hash))
 static VALUE
 enum_group_by(VALUE obj)
 {
-    VALUE hash;
-
     RETURN_SIZED_ENUMERATOR(obj, 0, 0, enum_size);
 
-    hash = rb_hash_new();
-    rb_block_call(obj, id_each, 0, 0, group_by_i, hash);
-    OBJ_INFECT(hash, obj);
-
-    return hash;
+    return enum_hashify(obj, 0, 0, group_by_i);
 }
 
 static VALUE