diff --git a/testcases.py b/testcases.py
index b38c24d9..bda56903 100644
--- a/testcases.py
+++ b/testcases.py
@@ -1424,7 +1424,7 @@ def check(self) -> TestResult:
         return TestResult.SUCCEEDED
 
 
-class TestCaseConnectionMigration(TestCaseAddressRebinding):
+class TestCaseConnectionMigration(TestCasePortRebinding):
     @staticmethod
     def name():
         return "connectionmigration"