diff --git a/zephyr/static/js/hashchange.js b/zephyr/static/js/hashchange.js
index 99760dda21..4414b95a49 100644
--- a/zephyr/static/js/hashchange.js
+++ b/zephyr/static/js/hashchange.js
@@ -45,7 +45,10 @@ function parse_narrow(hash) {
     } else {
         new_selection = initial_pointer;
     }
-    narrow.activate(operators, {then_select_id: new_selection});
+    narrow.activate(operators, {
+        then_select_id: new_selection,
+        change_hash:    false  // already set
+    });
 }
 
 // Returns true if this function performed a narrow
diff --git a/zephyr/static/js/narrow.js b/zephyr/static/js/narrow.js
index 9c9a0e33db..3f04efdf14 100644
--- a/zephyr/static/js/narrow.js
+++ b/zephyr/static/js/narrow.js
@@ -271,7 +271,8 @@ function build_filter(operators_mixed_case) {
 exports.activate = function (operators, opts) {
     opts = $.extend({}, {
         then_select_id: home_msg_list.selected_id(),
-        select_first_unread: false
+        select_first_unread: false,
+        change_hash: true
     }, opts);
 
     // Unfade the home view before we switch tables.
@@ -350,8 +351,13 @@ exports.activate = function (operators, opts) {
     }
     search.update_highlighting(extract_search_terms(operators));
 
-    // Put the narrow operators in the URL fragment and search bar
-    hashchange.save_narrow(operators);
+    // Put the narrow operators in the URL fragment.
+    // Disabled when the URL fragment was the source
+    // of this narrow.
+    if (opts.change_hash)
+        hashchange.save_narrow(operators);
+
+    // Put the narrow operators in the search bar.
     $('#search_query').val(unparse(operators));
     search.update_button_visibility();
     compose.update_recipient_on_narrow();