diff --git a/spec/chrome_spec.rb b/spec/chrome_spec.rb
index fbb929a..fd18b74 100644
--- a/spec/chrome_spec.rb
+++ b/spec/chrome_spec.rb
@@ -369,7 +369,7 @@
   describe ".random" do
     it "must return a random Chrome User-Agent string" do
       expect(subject.random).to match(
-        %r{Mozilla/5\.0 \([^\)]+(?:\(\d+\)[^\)]+)?\) AppleWebKit/537\.36 \(KHTML, like Gecko\) Chrome/\d+(\.\d+)* (?:Mobile )?Safari/537\.36\z}
+        %r{\AMozilla/5\.0 \([^\(\)]+(?:\([^\)]+\)[^\)]+)?\) AppleWebKit/537\.36 \(KHTML, like Gecko\) Chrome/\d+(\.\d+)* (?:Mobile )?Safari/537\.36\z}
       )
     end