diff --git a/toolkit/components/places/src/nsNavBookmarks.cpp b/toolkit/components/places/src/nsNavBookmarks.cpp
index 5f822b308fde..a88b264b2f00 100644
--- a/toolkit/components/places/src/nsNavBookmarks.cpp
+++ b/toolkit/components/places/src/nsNavBookmarks.cpp
@@ -852,7 +852,7 @@ nsNavBookmarks::SetToolbarFolder(PRInt64 aFolderId)
   // unset old toolbar folder
   if (mToolbarFolder > 0) {
     buffer.AssignLiteral("UPDATE moz_bookmarks SET folder_type = '' WHERE id = ");
-    buffer.AppendInt(aFolderId);
+    buffer.AppendInt(mToolbarFolder);
     rv = dbConn->ExecuteSimpleSQL(buffer);
     NS_ENSURE_SUCCESS(rv, rv);
   }