diff --git a/common/content/dactyl.js b/common/content/dactyl.js
index ba6e1655..b4938ad9 100644
--- a/common/content/dactyl.js
+++ b/common/content/dactyl.js
@@ -479,7 +479,7 @@ var Dactyl = Module("dactyl", XPCOM(Ci.nsISupportsWeakReference, ModuleBase), {
 
         if (fileName == null)
             if (info)
-                ({ file: fileName, line: lineNumber, context: ctxt }) = info;
+                ({ file: fileName, line: lineNumber, context: ctxt } = info);
 
         if (fileName && fileName[0] == "[")
             fileName = "dactyl://command-line/";
diff --git a/common/modules/dom.jsm b/common/modules/dom.jsm
index dbb5636f..ed24dfe0 100644
--- a/common/modules/dom.jsm
+++ b/common/modules/dom.jsm
@@ -408,7 +408,7 @@ var DOM = Class("DOM", {
 
         return this.each(function (elem, i) {
             if (func)
-                ({ left, top }) = func.call(this, elem, i);
+                ({ left, top } = func.call(this, elem, i));
 
             if (elem instanceof Ci.nsIDOMWindow)
                 elem.scrollTo(left == null ? elem.scrollX : left,
@@ -966,7 +966,7 @@ var DOM = Class("DOM", {
                         && parent.style.overflow == "visible")
                     return;
 
-                ({ rect }) = DOM(elem);
+                ({ rect } = DOM(elem));
                 let { viewport } = parent;
                 let isect = util.intersection(rect, viewport);