diff --git a/src/app/tests/TestCommissioningWindowManager.cpp b/src/app/tests/TestCommissioningWindowManager.cpp
index 5df7a4b6ce861d..297a95e299a30b 100644
--- a/src/app/tests/TestCommissioningWindowManager.cpp
+++ b/src/app/tests/TestCommissioningWindowManager.cpp
@@ -113,9 +113,8 @@ class TestCommissioningWindowManager : public ::testing::Test
         static chip::SimpleTestEventTriggerDelegate sSimpleTestEventTriggerDelegate;
         initParams.testEventTriggerDelegate = &sSimpleTestEventTriggerDelegate;
         (void) initParams.InitializeStaticResourcesBeforeServerInit();
-        // Set a randomized server port(slightly shifted from CHIP_PORT) for testing
-        initParams.operationalServicePort =
-            static_cast<uint16_t>(initParams.operationalServicePort + chip::Crypto::GetRandU16() % 20);
+        // Use whatever server port the kernel decides to give us.
+        initParams.operationalServicePort = 0;
 
         ASSERT_EQ(chip::Server::GetInstance().Init(initParams), CHIP_NO_ERROR);