diff --git a/common/content/dactyl.js b/common/content/dactyl.js
index edc5e14b..b9d95718 100644
--- a/common/content/dactyl.js
+++ b/common/content/dactyl.js
@@ -378,10 +378,8 @@ var Dactyl = Module("dactyl", XPCOM(Ci.nsISupportsWeakReference, ModuleBase), {
      *     @optional
      */
     clipboardWrite: function clipboardWrite(str, verbose, which) {
-        if (which == null)
+        if (which == null || which == "selection" && !services.clipboard.supportsSelectionClipboard())
             services.clipboardHelper.copyString(str);
-        else if (which == "selection" && !services.clipboard.supportsSelectionClipboard())
-            return;
         else
             services.clipboardHelper.copyStringToClipboard(str,
                 services.clipboard["k" + util.capitalize(which) + "Clipboard"]);
diff --git a/common/modules/buffer.jsm b/common/modules/buffer.jsm
index 1b7e6a60..90b5c976 100644
--- a/common/modules/buffer.jsm
+++ b/common/modules/buffer.jsm
@@ -1518,13 +1518,18 @@ var Buffer = Module("Buffer", {
     },
 
     _exWidth: function _exWidth(elem) {
-        let div = DOM(<elem style="width: 1ex !important; position: absolute !important; padding: 0 !important; display: block;"/>,
-                      elem.ownerDocument).appendTo(elem.body || elem);
         try {
-            return parseFloat(div.style.width);
+            let div = DOM(<elem style="width: 1ex !important; position: absolute !important; padding: 0 !important; display: block;"/>,
+                          elem.ownerDocument).appendTo(elem.body || elem);
+            try {
+                return parseFloat(div.style.width);
+            }
+            finally {
+                div.remove();
+            }
         }
-        finally {
-            div.remove();
+        catch (e) {
+            return parseFloat(DOM(elem).fontSize) / 1.618;
         }
     },