--- a/widget/nsDeviceContextSpecProxy.cpp
+++ b/widget/nsDeviceContextSpecProxy.cpp
@@ -134,32 +134,44 @@ nsDeviceContextSpecProxy::GetPrintingSca
 }
 
 NS_IMETHODIMP
 nsDeviceContextSpecProxy::BeginDocument(const nsAString& aTitle,
                                         const nsAString& aPrintToFileName,
                                         int32_t aStartPage, int32_t aEndPage)
 {
   mRecorder = new mozilla::layout::DrawEventRecorderPRFileDesc();
-  return mRemotePrintJob->InitializePrint(nsString(aTitle),
-                                          nsString(aPrintToFileName),
-                                          aStartPage, aEndPage);
+  nsresult rv = mRemotePrintJob->InitializePrint(nsString(aTitle),
+                                                 nsString(aPrintToFileName),
+                                                 aStartPage, aEndPage);
+  if (NS_FAILED(rv)) {
+    // The parent process will send a 'delete' message to tell this process to
+    // delete our RemotePrintJobChild.  As soon as we return to the event loop
+    // and evaluate that message we will crash if we try to access
+    // mRemotePrintJob.  We must not try to use it again.
+    mRemotePrintJob = nullptr;
+  }
+  return rv;
 }
 
 NS_IMETHODIMP
 nsDeviceContextSpecProxy::EndDocument()
 {
-  Unused << mRemotePrintJob->SendFinalizePrint();
+  if (mRemotePrintJob) {
+    Unused << mRemotePrintJob->SendFinalizePrint();
+  }
   return NS_OK;
 }
 
 NS_IMETHODIMP
 nsDeviceContextSpecProxy::AbortDocument()
 {
-  Unused << mRemotePrintJob->SendAbortPrint(NS_OK);
+  if (mRemotePrintJob) {
+    Unused << mRemotePrintJob->SendAbortPrint(NS_OK);
+  }
   return NS_OK;
 }
 
 NS_IMETHODIMP
 nsDeviceContextSpecProxy::BeginPage()
 {
   mRecorder->OpenFD(mRemotePrintJob->GetNextPageFD());