diff --git a/src/libmongoc/tests/json/client_side_encryption/unified/localSchema.json b/src/libmongoc/tests/json/client_side_encryption/unified/localSchema.json
index fef4b4e122..f54e25ca84 100644
--- a/src/libmongoc/tests/json/client_side_encryption/unified/localSchema.json
+++ b/src/libmongoc/tests/json/client_side_encryption/unified/localSchema.json
@@ -327,7 +327,8 @@
             }
           },
           "expectError": {
-            "isClientError": true
+            "isError": true,
+            "errorContains": "JSON schema keyword 'required' is only allowed with a remote schema"
           }
         }
       ]