diff --git a/js/id/core/connection.js b/js/id/core/connection.js
index e265436e4..f3860ce61 100644
--- a/js/id/core/connection.js
+++ b/js/id/core/connection.js
@@ -25,6 +25,10 @@ iD.Connection = function() {
         return url + '/browse/changeset/' + changesetId;
     };
 
+    connection.changesetsURL = function(extent) {
+        return url + '/browse/changesets?bbox=' + extent.toParam();
+    };
+
     connection.entityURL = function(entity) {
         return url + '/browse/' + entity.type + '/' + entity.osmId();
     };
diff --git a/js/id/geo/extent.js b/js/id/geo/extent.js
index 1b19abcbc..9d1cfe627 100644
--- a/js/id/geo/extent.js
+++ b/js/id/geo/extent.js
@@ -41,5 +41,9 @@ _.extend(iD.geo.Extent.prototype, {
         return iD.geo.Extent(
                 [this[0][0] - dLon, this[0][1] - dLat],
                 [this[1][0] + dLon, this[1][1] + dLat]);
+    },
+
+    toParam: function() {
+        return [this[0][0], this[0][1], this[1][0], this[1][1]].join(',');
     }
 });
diff --git a/js/id/ui/contributors.js b/js/id/ui/contributors.js
index 80125eed1..b9fbdcb9b 100644
--- a/js/id/ui/contributors.js
+++ b/js/id/ui/contributors.js
@@ -34,10 +34,7 @@ iD.ui.Contributors = function(context) {
                 .attr('target', '_blank')
                 .attr('tabindex', -1)
                 .attr('href', function() {
-                    var ext = context.map().extent();
-                    return 'http://www.openstreetmap.org/browse/changesets?bbox=' + [
-                        ext[0][0], ext[0][1],
-                        ext[1][0], ext[1][1]];
+                    return context.connection().changesetsURL(context.map().extent());
                 })
                 .text(u.length - limit + 1);