diff --git a/mozilla/xpcom/io/nsLocalFileOS2.cpp b/mozilla/xpcom/io/nsLocalFileOS2.cpp
index 64b962698af..7ceb3405647 100644
--- a/mozilla/xpcom/io/nsLocalFileOS2.cpp
+++ b/mozilla/xpcom/io/nsLocalFileOS2.cpp
@@ -2074,6 +2074,20 @@ nsLocalFile::GetDirectoryEntries(nsISimpleEnumerator * *entries)
     return NS_OK;
 }
 
+NS_IMETHODIMP
+nsLocalFile::GetPersistentDescriptor(char * *aPersistentDescriptor)
+{
+    NS_ENSURE_ARG_POINTER(aPersistentDescriptor);
+    return GetPath(aPersistentDescriptor);
+}
+
+NS_IMETHODIMP
+nsLocalFile::SetPersistentDescriptor(const char * aPersistentDescriptor)
+{
+   NS_ENSURE_ARG(aPersistentDescriptor); 
+   return InitWithPath(aPersistentDescriptor);   
+}
+
 
 nsresult 
 NS_NewLocalFile(const char* path, PRBool followLinks, nsILocalFile* *result)