diff --git a/spec/atom-environment-spec.coffee b/spec/atom-environment-spec.coffee
index 937b2b241..fa8c3cc5d 100644
--- a/spec/atom-environment-spec.coffee
+++ b/spec/atom-environment-spec.coffee
@@ -268,7 +268,17 @@ describe "AtomEnvironment", ->
       runs ->
         atom.textEditors.setGrammarOverride(editor, 'text.plain')
 
-        atom2 = new AtomEnvironment(atom)
+        atom2 = new AtomEnvironment({
+          applicationDelegate: atom.applicationDelegate,
+          window: document.createElement('div'),
+          document: Object.assign(
+            document.createElement('div'),
+            {
+              body: document.createElement('div'),
+              head: document.createElement('div'),
+            }
+          )
+        })
         atom2.deserialize(atom.serialize())
 
         expect(atom2.textEditors.getGrammarOverride(editor)).toBe('text.plain')