diff --git a/ballerina-tests/http-resiliency-tests/tests/test_service_ports.bal b/ballerina-tests/http-resiliency-tests/tests/test_service_ports.bal
index 6354327883..a375f36d84 100644
--- a/ballerina-tests/http-resiliency-tests/tests/test_service_ports.bal
+++ b/ballerina-tests/http-resiliency-tests/tests/test_service_ports.bal
@@ -25,5 +25,5 @@ const int foClientWithoutStatusCodeTestPort2 = 9572;
 
 const int http2RetryFunctionTestPort = 9706;
 
-int passthroughTestPort1 = 9543;
-int passthroughTestPort2 = 9544;
+const int passthroughTestPort1 = 9543;
+const int passthroughTestPort2 = 9544;