diff --git a/mozilla/extensions/layout-debug/plugin/plugin.cpp b/mozilla/extensions/layout-debug/plugin/plugin.cpp
index 389b1dfe5fb..3f22a2017cc 100644
--- a/mozilla/extensions/layout-debug/plugin/plugin.cpp
+++ b/mozilla/extensions/layout-debug/plugin/plugin.cpp
@@ -272,7 +272,7 @@ char*                 URLName;
       break;
     nsXPIDLCString filePath;
     char* afilepath;
-    nsCAutoString path;
+    nsAutoString path;
 
 
     rv = dirEntry->GetPath(path);