diff --git a/common/content/buffer.js b/common/content/buffer.js
index d6f948c6..34e6f832 100644
--- a/common/content/buffer.js
+++ b/common/content/buffer.js
@@ -1133,7 +1133,7 @@ var Buffer = Module("buffer", {
             return "";
 
         let range = selection.getRangeAt(0).cloneRange();
-        if (range.collapsed) {
+        if (range.collapsed && range.startContainer instanceof Text) {
             let re = options.get("iskeyword").regexp;
             Editor.extendRange(range, true,  re, true);
             Editor.extendRange(range, false, re, true);
diff --git a/common/content/dactyl.js b/common/content/dactyl.js
index 9aea3b2e..11e5532d 100644
--- a/common/content/dactyl.js
+++ b/common/content/dactyl.js
@@ -361,7 +361,7 @@ var Dactyl = Module("dactyl", XPCOM(Ci.nsISupportsWeakReference, ModuleBase), {
     echoerr: function echoerr(str, flags) {
         flags |= commandline.APPEND_TO_MESSAGES;
 
-        if (isinstance(str, ["Error", "Exception"]) || isinstance(str, ["XPCWrappedNative_NoHelper"]) && /^\[Exception/.test(str))
+        if (isinstance(str, ["DOMException", "Error", "Exception"]) || isinstance(str, ["XPCWrappedNative_NoHelper"]) && /^\[Exception/.test(str))
             dactyl.reportError(str);
         if (isObject(str) && "echoerr" in str)
             str = str.echoerr;