diff --git a/ipc/glue/AsyncChannel.cpp b/ipc/glue/AsyncChannel.cpp
index b80263f..5fb3c22 100644
--- a/ipc/glue/AsyncChannel.cpp
+++ b/ipc/glue/AsyncChannel.cpp
@@ -470,7 +470,7 @@ AsyncChannel::OnDispatchMessage(const Message& msg)
     // it's OK to dispatch messages if the channel is closed/error'd,
     // since we don't have a reply to send back
 
-    (void)MaybeHandleError(mListener->OnMessageReceived(msg), "AsyncChannel");
+    (void)MaybeHandleError(mListener ? mListener->OnMessageReceived(msg) : MsgNotKnown, "AsyncChannel");
 }
 
 bool
@@ -524,7 +524,8 @@ AsyncChannel::NotifyChannelClosed()
 
     // OK, the IO thread just closed the channel normally.  Let the
     // listener know about it.
-    mListener->OnChannelClose();
+    if (mListener)
+      mListener->OnChannelClose();
 
     Clear();
 }
@@ -546,7 +547,8 @@ AsyncChannel::NotifyMaybeChannelError()
 
     // Oops, error!  Let the listener know about it.
     mChannelState = ChannelError;
-    mListener->OnChannelError();
+    if (mListener)
+      mListener->OnChannelError();
 
     Clear();
 }
@@ -610,7 +612,8 @@ AsyncChannel::MaybeHandleError(Result code, const char* channelName)
 
     PrintErrorMessage(mChild, channelName, errorMsg);
 
-    mListener->OnProcessingError(code);
+    if (mListener)
+      mListener->OnProcessingError(code);
 
     return false;
 }
@@ -642,7 +645,8 @@ AsyncChannel::ReportConnectionError(const char* channelName) const
 
     PrintErrorMessage(mChild, channelName, errorMsg);
 
-    mListener->OnProcessingError(MsgDropped);
+    if (mListener)
+      mListener->OnProcessingError(MsgDropped);
 }
 
 void