diff --git a/Formula/fibjs.rb b/Formula/fibjs.rb
index 19e8d5a61e..36a315d4ad 100644
--- a/Formula/fibjs.rb
+++ b/Formula/fibjs.rb
@@ -14,7 +14,7 @@ class Fibjs < Formula
     sha256 "dd613776c5fe0bf2719ebfa910a39cdd23c94eb3d9deeafc90deefb158604fc2" => :mavericks
   end
 
- depends_on "cmake" => :build
+  depends_on "cmake" => :build
 
   def install
     system "./build", "Release", "-j#{ENV.make_jobs}"
@@ -25,8 +25,7 @@ class Fibjs < Formula
     path = testpath/"test.js"
     path.write "console.log('hello');"
 
-    output = `#{bin}/fibjs #{path}`.strip
+    output = shell_output("#{bin}/fibjs #{path}").strip
     assert_equal "hello", output
-    assert_equal 0, $?.exitstatus
   end
 end