diff --git a/common/content/editor.js b/common/content/editor.js
index 86892e41..c62e8475 100644
--- a/common/content/editor.js
+++ b/common/content/editor.js
@@ -649,6 +649,7 @@ var Editor = Module("editor", {
         mappings.add([modes.INPUT],
             ["<C-t>"], "Edit text field in Vi mode",
             function () {
+                dactyl.assert(dactyl.focusedElement);
                 dactyl.assert(!editor.isTextEdit);
                 modes.push(modes.TEXT_EDIT);
             });