diff --git a/ui (gen4)/features/history.js b/ui (gen4)/features/history.js
index 5dd2c610..f210d4f5 100755
--- a/ui (gen4)/features/history.js	
+++ b/ui (gen4)/features/history.js	
@@ -160,6 +160,8 @@ var URLHistoryActions = actions.Actions({
 			var to_remove = Object.keys(this.url_history)
 				// we will not remove pinned items...
 				.filter(function(e){
+					// NOTE: .pinned can be 0 so we can't just use 
+					// 		that.url_history[e].pinned as a test...
 					return that.url_history[e].pinned == null })
 			// we clear the head of the list -- first/oldest urls added...
 			to_remove.reverse()