--- a/dom/media/gmp/ChromiumCDMChild.cpp
+++ b/dom/media/gmp/ChromiumCDMChild.cpp
@@ -180,17 +180,16 @@ ChromiumCDMChild::SetTimer(int64_t aDela
   SetTimerOnMainThread(NewGMPTask([self, aContext]() {
     self->TimerExpired(aContext);
   }), aDelayMs);
 }
 
 cdm::Time
 ChromiumCDMChild::GetCurrentWallTime()
 {
-  MOZ_ASSERT(IsOnMessageLoopThread());
   return base::Time::Now().ToDoubleT();
 }
 
 template <typename MethodType, typename... ParamType>
 void
 ChromiumCDMChild::CallMethod(MethodType aMethod, ParamType&&... aParams)
 {
   MOZ_ASSERT(IsOnMessageLoopThread());