diff --git a/automotive/vehicle/aidl/impl/utils/common/test/PendingRequestPoolTest.cpp b/automotive/vehicle/aidl/impl/utils/common/test/PendingRequestPoolTest.cpp
index 734c739..cc690d7 100644
--- a/automotive/vehicle/aidl/impl/utils/common/test/PendingRequestPoolTest.cpp
+++ b/automotive/vehicle/aidl/impl/utils/common/test/PendingRequestPoolTest.cpp
@@ -57,7 +57,7 @@
 
   private:
     // Test timeout is 0.1s.
-    static const int64_t TEST_TIMEOUT = 100000000;
+    static constexpr int64_t TEST_TIMEOUT = 100000000;
 
     std::unique_ptr<PendingRequestPool> mPool;
 };