diff --git a/mailnews/addrbook/src/nsAbOutlookDirFactory.cpp b/mailnews/addrbook/src/nsAbOutlookDirFactory.cpp
index 87726e7f187..d117ee917cc 100644
--- a/mailnews/addrbook/src/nsAbOutlookDirFactory.cpp
+++ b/mailnews/addrbook/src/nsAbOutlookDirFactory.cpp
@@ -80,6 +80,8 @@ nsAbOutlookDirFactory::GetDirectories(const nsAString &aDirName,
 
     *aDirectories = nsnull ;
     nsresult retCode = NS_OK ;
+    nsCString stub;
+    nsCString entry;
     nsAbWinType abType = getAbWinType(kOutlookDirectoryScheme,
                                       nsCString(aURI).get(), stub, entry);