diff --git a/source/auth/tests/legacy/connection-string.json b/source/auth/tests/legacy/connection-string.json
index 5b54e2aadd..d980a117e0 100644
--- a/source/auth/tests/legacy/connection-string.json
+++ b/source/auth/tests/legacy/connection-string.json
@@ -517,7 +517,7 @@
     },
     {
       "description": "should throw an exception if username is specified for test (MONGODB-OIDC)",
-      "uri": "mongodb://principalName@localhost/?authMechanism=MONGODB-OIDC&ENVIRONMENT:test",
+      "uri": "mongodb://principalName@localhost/?authMechanism=MONGODB-OIDC&authMechanismProperties=ENVIRONMENT:test",
       "valid": false,
       "credential": null
     },
@@ -669,4 +669,4 @@
       "credential": null
     }
   ]
-}
\ No newline at end of file
+}
diff --git a/source/auth/tests/legacy/connection-string.yml b/source/auth/tests/legacy/connection-string.yml
index a965113395..8b46dfb56a 100644
--- a/source/auth/tests/legacy/connection-string.yml
+++ b/source/auth/tests/legacy/connection-string.yml
@@ -375,7 +375,7 @@ tests:
   valid: false
   credential:
 - description: should throw an exception if username is specified for test (MONGODB-OIDC)
-  uri: mongodb://principalName@localhost/?authMechanism=MONGODB-OIDC&ENVIRONMENT:test
+  uri: mongodb://principalName@localhost/?authMechanism=MONGODB-OIDC&authMechanismProperties=ENVIRONMENT:test
   valid: false
   credential:
 - description: should throw an exception if specified environment is not supported (MONGODB-OIDC)