diff --git a/spec/stdlib/fs-spec.coffee b/spec/stdlib/fs-spec.coffee
index 248762ffe..d19c2f253 100644
--- a/spec/stdlib/fs-spec.coffee
+++ b/spec/stdlib/fs-spec.coffee
@@ -83,7 +83,7 @@ describe "fs", ->
 
       expect(paths.length).toBeGreaterThan 0
       for path in paths
-        expect(path).not.toMatch /\/dir$/
+        expect(path).not.toMatch /\/dir\//
 
   describe ".lastModified(path)", ->
     it "returns a Date object representing the time the file was last modified", ->