diff --git a/chrome/content/zotero/itemPane.js b/chrome/content/zotero/itemPane.js
index ad303e5a25..bd0eb09b3b 100644
--- a/chrome/content/zotero/itemPane.js
+++ b/chrome/content/zotero/itemPane.js
@@ -231,15 +231,18 @@ var ZoteroItemPane = new function() {
 		switch (tabBox.selectedIndex) {
 		case 0:
 			var box = _itemBox;
+			if (box) {
+				yield box.blurOpenField();
+			}
 			break;
 			
 		case 2:
 			var box = _tagsBox.current;
+			if (box) {
+				box.blurOpenField();
+			}
 			break;
 		}
-		if (box) {
-			yield box.blurOpenField();
-		}
 	});