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-rw-r--r--browser/components/places/content/treeView.js4
1 files changed, 3 insertions, 1 deletions
diff --git a/browser/components/places/content/treeView.js b/browser/components/places/content/treeView.js
index 5baf3a21f..181bb5404 100644
--- a/browser/components/places/content/treeView.js
+++ b/browser/components/places/content/treeView.js
@@ -170,7 +170,9 @@ PlacesTreeView.prototype = {
let row = -1;
let useNodeIndex = typeof(aNodeIndex) == "number";
if (parent == this._rootNode) {
- row = useNodeIndex ? aNodeIndex : this._rootNode.getChildIndex(aNode);
+ if (aNode instanceof Ci.nsINavHistoryResultNode) {
+ row = useNodeIndex ? aNodeIndex : this._rootNode.getChildIndex(aNode);
+ }
}
else if (useNodeIndex && typeof(aParentRow) == "number") {
// If we have both the row of the parent node, and the node's index, we