diff --git a/common/content/commandline.js b/common/content/commandline.js
index e02bcd5a..958d466f 100644
--- a/common/content/commandline.js
+++ b/common/content/commandline.js
@@ -959,7 +959,7 @@ var CommandLine = Module("commandline", {
         this.savingOutput = true;
         apply(dactyl, "trapErrors", [fn, self].concat(args));
         this.savingOutput = false;
-        return output.map(elem => elem instanceof Node ? DOM.stringify(elem) : elem)
+        return output.map(elem => elem instanceof Ci.nsIDOMNode ? DOM.stringify(elem) : elem)
                      .join("\n");
     }
 }, {
diff --git a/common/content/mow.js b/common/content/mow.js
index 4f98ec17..df47087d 100644
--- a/common/content/mow.js
+++ b/common/content/mow.js
@@ -139,9 +139,11 @@ var MOW = Module("mow", {
 
         body.append(output);
 
-        let str = typeof data !== "xml" && data.message || data;
-        if (!silent)
-            dactyl.triggerObserver("echoMultiline", data, highlightGroup, output[0]);
+        if (!silent) {
+            let str = data.message || data;
+            let msg = isString(str) ? str : output[0];
+            dactyl.triggerObserver("echoMultiline", data, highlightGroup, msg);
+        }
 
         this._timer.tell();
         if (!this.visible)