Add line break to string

1 files changed, 1 insertions, 1 deletions

diff --git a/Library/Homebrew/test/cask/cli/internal_stanza_spec.rb b/Library/Homebrew/test/cask/cli/internal_stanza_spec.rb
index a020b33d4..47b0fd8b3 100644
--- a/Library/Homebrew/test/cask/cli/internal_stanza_spec.rb
+++ b/Library/Homebrew/test/cask/cli/internal_stanza_spec.rb
@@ -9,7 +9,7 @@ describe Hbc::CLI::InternalStanza, :cask do
   it "raises an exception when stanza is unknown/unsupported" do
     expect {
       described_class.new("this_stanza_does_not_exist", "with-gpg")
-    }.to raise_error(/Unknown\/unsupported stanza/)
+    }.to raise_error(%r{Unknown/unsupported stanza})
   end
 
   it "raises an exception when normal stanza is not present on cask" do