diff --git a/modules/overlay/overlay-parent.js b/modules/overlay/overlay-parent.js
index 8f11df6..ff457bc 100644
--- a/modules/overlay/overlay-parent.js
+++ b/modules/overlay/overlay-parent.js
@@ -555,7 +555,14 @@ Drupal.overlay.eventhandlerOverrideLink = function (event) {
       else {
         // Add the overlay-context state to the link, so "overlay-restore" links
         // can restore the context.
-        $target.attr('href', $.param.fragment(href, { 'overlay-context': this.getPath(window.location) + window.location.search }));
+        if ($target[0].hash) {
+          // Leave links with an existing fragment alone. Adding an extra
+          // parameter to a link like "node/1#section-1" breaks the link.
+        }
+        else {
+          // For links with no existing fragment, add the overlay context.
+          $target.attr('href', $.param.fragment(href, { 'overlay-context': this.getPath(window.location) + window.location.search }));
+        }
 
         // When the link has a destination query parameter and that destination
         // is an admin link we need to fragmentize it. This will make it reopen