diff --git a/Library/Homebrew/test/test_updater.rb b/Library/Homebrew/test/test_updater.rb
index 16f4f2e858..20d26e6e90 100644
--- a/Library/Homebrew/test/test_updater.rb
+++ b/Library/Homebrew/test/test_updater.rb
@@ -58,6 +58,7 @@ class UpdaterTests < Homebrew::TestCase
     FormulaVersions.stubs(:new).returns(stub(:formula_at_revision => "2.0"))
     @updater.diff = fixture(fixture_name)
     @updater.in_repo_expect("git diff --quiet", true)
+    @updater.in_repo_expect("git symbolic-ref refs/remotes/origin/HEAD 2>/dev/null", "refs/remotes/origin/master")
     @updater.in_repo_expect("git symbolic-ref --short HEAD 2>/dev/null", "master")
     @updater.in_repo_expect("git rev-parse -q --verify HEAD", "1234abcd")
     @updater.in_repo_expect("git config core.autocrlf false")