diff --git a/extensions/webdav/public/nsIWebDAVListener.idl b/extensions/webdav/public/nsIWebDAVListener.idl
index 646aa34457de..69dfc374143d 100644
--- a/extensions/webdav/public/nsIWebDAVListener.idl
+++ b/extensions/webdav/public/nsIWebDAVListener.idl
@@ -80,3 +80,10 @@ interface nsIWebDAVOperationListener : nsISupports
     void onMakeCollectionResult(in unsigned long aStatusCode,
                                 in nsIWebDAVResource aResource);
 };
+
+[scriptable,uuid(be99d517-9161-4a7d-8bee-2ee98c1c2c6f)]
+interface nsIWebDAVDetailedOperationListener : nsIWebDAVOperationListener
+{
+    void onResultDetail(in unsigned long statusCode, in AUTF8String resource,
+                        in AString method);
+};
diff --git a/extensions/webdav/public/nsIWebDAVService.idl b/extensions/webdav/public/nsIWebDAVService.idl
index 1332d0d5be53..c259e5a47040 100644
--- a/extensions/webdav/public/nsIWebDAVService.idl
+++ b/extensions/webdav/public/nsIWebDAVService.idl
@@ -86,7 +86,7 @@ interface nsIWebDAVService : nsISupports
              in nsIWebDAVOperationListener listener);
 
     void remove(in nsIWebDAVResource resource,
-                in nsIWebDAVOperationListener listener);
+                in nsIWebDAVDetailedOperationListener listener);
 
     void moveTo(in nsIWebDAVResourceWithTarget resource,
                 in nsIWebDAVOperationListener listener);
diff --git a/extensions/webdav/src/nsWebDAVService.cpp b/extensions/webdav/src/nsWebDAVService.cpp
index 35e5bc047b26..7f8b1b0262f5 100644
--- a/extensions/webdav/src/nsWebDAVService.cpp
+++ b/extensions/webdav/src/nsWebDAVService.cpp
@@ -511,7 +511,7 @@ nsWebDAVService::Put(nsIWebDAVResourceWithData *resource,
 
 NS_IMETHODIMP
 nsWebDAVService::Remove(nsIWebDAVResource *resource,
-                        nsIWebDAVOperationListener *listener)
+                        nsIWebDAVDetailedOperationListener *listener)
 {
     nsCOMPtr<nsIHttpChannel> channel;
     nsresult rv = ChannelFromResource(resource, getter_AddRefs(channel));