diff --git a/Objects/frameobject.c b/Objects/frameobject.c
index 44afda0c755ab0..8c596ede70ca3d 100644
--- a/Objects/frameobject.c
+++ b/Objects/frameobject.c
@@ -263,6 +263,10 @@ framelocalsproxy_merge(PyObject* self, PyObject* other)
 
     Py_DECREF(iter);
 
+    if (PyErr_Occurred()) {
+        return -1;
+    }
+
     return 0;
 }
 
diff --git a/Objects/namespaceobject.c b/Objects/namespaceobject.c
index 5b7547103a2b3f..4ef3bd92f5a569 100644
--- a/Objects/namespaceobject.c
+++ b/Objects/namespaceobject.c
@@ -141,6 +141,10 @@ namespace_repr(PyObject *ns)
             goto error;
     }
 
+    if (PyErr_Occurred()) {
+        goto error;
+    }
+
     separator = PyUnicode_FromString(", ");
     if (separator == NULL)
         goto error;