--- a/layout/printing/nsPrintEngine.cpp
+++ b/layout/printing/nsPrintEngine.cpp
@@ -1554,17 +1554,19 @@ nsPrintEngine::FirePrintingErrorEvent(ns
   event->SetTrusted(true);
 
   RefPtr<AsyncEventDispatcher> asyncDispatcher =
     new AsyncEventDispatcher(doc, event);
   asyncDispatcher->mOnlyChromeDispatch = true;
   asyncDispatcher->RunDOMEventWhenSafe();
 
   // Inform any progress listeners of the Error.
-  mPrt->DoOnStatusChange(aPrintError);
+  if (mPrt) {
+    mPrt->DoOnStatusChange(aPrintError);
+  }
 }
 
 //-----------------------------------------------------------------
 //-- Section: Reflow Methods
 //-----------------------------------------------------------------
 
 nsresult
 nsPrintEngine::ReconstructAndReflow(bool doSetPixelScale)