diff --git a/common/content/buffer.js b/common/content/buffer.js
index f8aac7b4..6e7c9725 100644
--- a/common/content/buffer.js
+++ b/common/content/buffer.js
@@ -465,6 +465,7 @@ var Buffer = Module("buffer", {
 
             if (!elem.dactylHadFocus && elem.value &&
                     elem instanceof HTMLInputElement &&
+                    Editor.getEditor(elem) &&
                     elem.selectionStart != null &&
                     elem.selectionStart == elem.selectionEnd)
                 elem.selectionStart = elem.selectionEnd = elem.value.length;