diff --git a/browser/base/content/browser.js b/browser/base/content/browser.js
index 12bf4150f97b..65d772d82f93 100644
--- a/browser/base/content/browser.js
+++ b/browser/base/content/browser.js
@@ -6914,7 +6914,7 @@ let gPrivateBrowsingUI = {
     document.getElementById("menu_import").setAttribute("disabled", "true");
     
     // Disable the Clear Recent History... menu item when in PB mode
-    // 1.9.1 branch only (bug 480260)
+    // temporary fix until bug 463607 is fixed
     document.getElementById("Tools:Sanitize").setAttribute("disabled", "true");
 
     this._privateBrowsingAutoStarted = this._privateBrowsingService.autoStarted;
@@ -6945,7 +6945,7 @@ let gPrivateBrowsingUI = {
     document.getElementById("menu_import").removeAttribute("disabled");
 
     // Re-enable the Clear Recent History... menu item on exit of PB mode
-    // 1.9.1 branch only (bug 480260)
+    // temporary fix until bug 463607 is fixed
     document.getElementById("Tools:Sanitize").removeAttribute("disabled");
 
     if (gFindBar)