diff --git a/js/prefs.js b/js/prefs.js
index 3b6c67e17..89607c6c8 100755
--- a/js/prefs.js
+++ b/js/prefs.js
@@ -866,7 +866,7 @@ function validatePrefsReset() {
 
 	if (ok) {
 
-		query = "?op=pref-prefs&method=resetconfig";
+		var query = "?op=pref-prefs&method=resetconfig";
 		console.log(query);
 
 		new Ajax.Request("backend.php", {
diff --git a/js/tt-rss.js b/js/tt-rss.js
index c0e5af31d..284df9746 100644
--- a/js/tt-rss.js
+++ b/js/tt-rss.js
@@ -610,7 +610,7 @@ function init_second_stage() {
 	dijit.getEnclosingWidget(toolbar.order_by).attr('value',
 		getInitParam("default_view_order_by"));
 
-	feeds_sort_by_unread = getInitParam("feeds_sort_by_unread") == 1;
+	var feeds_sort_by_unread = getInitParam("feeds_sort_by_unread") == 1;
 
 	var hash_feed_id = hash_get('f');
 	var hash_feed_is_cat = hash_get('c') == "1";
@@ -629,7 +629,7 @@ function init_second_stage() {
 	var tmp = [];
 
 	for (var sequence in hotkeys[1]) {
-		filtered = sequence.replace(/\|.*$/, "");
+		var filtered = sequence.replace(/\|.*$/, "");
 		tmp[filtered] = hotkeys[1][sequence];
 	}
 
diff --git a/js/viewfeed.js b/js/viewfeed.js
index 0c15a23b9..c457a9a38 100755
--- a/js/viewfeed.js
+++ b/js/viewfeed.js
@@ -934,7 +934,7 @@ function deleteSelection() {
 		return;
 	}
 
-	query = "?op=rpc&method=delete&ids=" + param_escape(rows);
+	var query = "?op=rpc&method=delete&ids=" + param_escape(rows);
 
 	console.log(query);
 
@@ -978,7 +978,7 @@ function archiveSelection() {
 		return;
 	}
 
-	query = "?op=rpc&method="+op+"&ids=" + param_escape(rows);
+	var query = "?op=rpc&method="+op+"&ids=" + param_escape(rows);
 
 	console.log(query);