diff --git a/lib/index.js b/lib/index.js
index e5fe688..c344584 100755
--- a/lib/index.js
+++ b/lib/index.js
@@ -45,7 +45,7 @@ const internals = {
         '415': 'Unsupported Media Type',
         '416': 'Requested Range Not Satisfiable',
         '417': 'Expectation Failed',
-        '418': `I'm a teapot`,
+        '418': 'I\'m a teapot',
         '422': 'Unprocessable Entity',
         '423': 'Locked',
         '424': 'Failed Dependency',