diff --git a/automotive/vehicle/aidl/impl/fake_impl/hardware/include/FakeVehicleHardware.h b/automotive/vehicle/aidl/impl/fake_impl/hardware/include/FakeVehicleHardware.h
index 8cd92b3b89..d986b419f2 100644
--- a/automotive/vehicle/aidl/impl/fake_impl/hardware/include/FakeVehicleHardware.h
+++ b/automotive/vehicle/aidl/impl/fake_impl/hardware/include/FakeVehicleHardware.h
@@ -182,7 +182,7 @@ class FakeVehicleHardware : public IVehicleHardware {
     std::unordered_set<int32_t> hvacPowerDependentProps;
 
     const bool mForceOverride;
-    bool mAddExtraTestVendorConfigs;
+    bool mAddExtraTestVendorConfigs = false;
 
     // Only used during initialization.
     JsonConfigLoader mLoader;