diff --git a/dom/media/test/crashtests/1127188.html b/dom/media/test/crashtests/1127188.html
new file mode 100644
index 000000000000..650f07dd4754
--- /dev/null
+++ b/dom/media/test/crashtests/1127188.html
@@ -0,0 +1,3 @@
+<script>
+  (new AudioContext).close();
+</script>
diff --git a/dom/media/test/crashtests/crashtests.list b/dom/media/test/crashtests/crashtests.list
index e15df43c9efa..64ca51bc245b 100644
--- a/dom/media/test/crashtests/crashtests.list
+++ b/dom/media/test/crashtests/crashtests.list
@@ -78,6 +78,7 @@ load 1080986.html
 load 1158427.html
 load 1157994.html
 load 1122218.html
+load 1127188.html
 include ../../mediasource/test/crashtests/crashtests.list
 
 # This needs to run at the end to avoid leaking busted state into other tests.
diff --git a/dom/media/webaudio/AudioContext.cpp b/dom/media/webaudio/AudioContext.cpp
index 22fb91750b59..278446491385 100644
--- a/dom/media/webaudio/AudioContext.cpp
+++ b/dom/media/webaudio/AudioContext.cpp
@@ -769,13 +769,19 @@ private:
   nsRefPtr<AudioContext> mAudioContext;
 };
 
-
-
 void
 AudioContext::OnStateChanged(void* aPromise, AudioContextState aNewState)
 {
   MOZ_ASSERT(NS_IsMainThread());
 
+  // This can happen if close() was called right after creating the
+  // AudioContext, before the context has switched to "running".
+  if (mAudioContextState == AudioContextState::Closed &&
+      aNewState == AudioContextState::Running &&
+      !aPromise) {
+    return;
+  }
+
   MOZ_ASSERT((mAudioContextState == AudioContextState::Suspended &&
               aNewState == AudioContextState::Running)   ||
              (mAudioContextState == AudioContextState::Running   &&