--- a/dom/vr/VRServiceTest.h
+++ b/dom/vr/VRServiceTest.h
@@ -190,16 +190,16 @@ class VRServiceTest final : public DOMEv
   // When the command buffer is submitted to the PuppetSession, with
   // VRServiceTest::Run(), it is cleared  to ensure that the commands are not
   // sent redundantly in subsequent VRServicetest::Run() calls.
   // VRServiceTest::Commit() will perform a binary comparison of mPendingState
   // and mEncodedState to determine what instructions need to be appended to
   // mCommandBuffer.
   // VRServiceTest::Reset() will effectively cancel all transactions and clear
   // mCommandBuffer before submitting the reset request to the PuppetSession.
-  InfallibleTArray<uint64_t> mCommandBuffer;
+  nsTArray<uint64_t> mCommandBuffer;
   bool mShuttingDown;
 };
 
 }  // namespace dom
 }  // namespace mozilla
 
 #endif  // mozilla_dom_VRServiceTest_h_