diff --git a/firefox-17.0-kde.patch b/firefox-17.0-kde.patch
index 74dfaef..beef666 100644
--- a/firefox-17.0-kde.patch
+++ b/firefox-17.0-kde.patch
@@ -1516,7 +1516,7 @@
 +NS_IMETHODIMP
 +nsKDEShellService::GetDefaultFeedReader(nsIFile** _retval)
 +    {
-+    *_retval = nsnull;
++    *_retval = nullptr;
 +
 +    nsCOMPtr<nsIMutableArray> command = do_CreateInstance( NS_ARRAY_CONTRACTID );
 +    if( !command )
diff --git a/mozilla-17.0-kde.patch b/mozilla-17.0-kde.patch
index 147c6a0..f755db7 100644
--- a/mozilla-17.0-kde.patch
+++ b/mozilla-17.0-kde.patch
@@ -2749,7 +2749,7 @@
 +        {
 +        nsCString mimetype = output[ 0 ];
 +        nsRefPtr<nsMIMEInfoUnix> mimeInfo = new nsMIMEInfoUnix( mimetype );
-+        NS_ENSURE_TRUE(mimeInfo, nsnull);
++        NS_ENSURE_TRUE(mimeInfo, nullptr);
 +        nsCString description = output[ 1 ];
 +        mimeInfo->SetDescription(NS_ConvertUTF8toUTF16(description));
 +        nsCString handlerAppName = output[ 2 ];
@@ -2759,7 +2759,7 @@
 +        NS_ADDREF((retval = mimeInfo));
 +        return retval;
 +        }
-+    return nsnull;
++    return nullptr;
 +}
 --- mozilla-release/uriloader/exthandler/unix/nsKDERegistry.h.kdemoz	2012-11-21 20:48:44.553356851 +0400
 +++ mozilla-release/uriloader/exthandler/unix/nsKDERegistry.h	2012-11-21 20:48:44.553356851 +0400