1 files changed, 9 insertions, 7 deletions
diff --git a/sources/pyside6/PySide6/glue/qtnetworkauth.cpp b/sources/pyside6/PySide6/glue/qtnetworkauth.cpp
index e22569e2e..f390605d2 100644
--- a/sources/pyside6/PySide6/glue/qtnetworkauth.cpp
+++ b/sources/pyside6/PySide6/glue/qtnetworkauth.cpp
@@ -16,13 +16,15 @@ auto callback = [callable](QAbstractOAuth::Stage stage, QMultiMap<QString, QVari
     PyTuple_SET_ITEM(arglist, 1, %CONVERTTOPYTHON[QMultiMap<QString, QVariant>](dict));
     Shiboken::AutoDecRef ret(PyObject_CallObject(callable, arglist));
 
-    PyObject *key;
-    PyObject *value;
-    Py_ssize_t pos = 0;
-    while (PyDict_Next(ret, &pos, &key, &value)) {
-        QString cppKey = %CONVERTTOCPP[QString](key);
-        QVariant cppValue = %CONVERTTOCPP[QVariant](value);
-        dictPointer->replace(cppKey, cppValue);
+    if (!ret.isNull() && PyDict_Check(ret.object()) != 0) {
+        PyObject *key{};
+        PyObject *value{};
+        Py_ssize_t pos = 0;
+        while (PyDict_Next(ret.object(), &pos, &key, &value)) {
+            QString cppKey = %CONVERTTOCPP[QString](key);
+            QVariant cppValue = %CONVERTTOCPP[QVariant](value);
+            dictPointer->replace(cppKey, cppValue);
+        }
     }
 
     Py_DECREF(callable);