diff --git a/Modules/socketmodule.c b/Modules/socketmodule.c
index eeade2e..ddb1c43 100644
--- a/Modules/socketmodule.c
+++ b/Modules/socketmodule.c
@@ -6269,9 +6269,11 @@
         if (single == NULL)
             goto err;
 
-        if (PyList_Append(all, single))
+        if (PyList_Append(all, single)) {
+            Py_DECREF(single);
             goto err;
-        Py_XDECREF(single);
+        }
+        Py_DECREF(single);
     }
     Py_XDECREF(idna);
     if (res0)