diff --git a/components/connection.js b/components/connection.js
index c390520..e1aabda 100644
--- a/components/connection.js
+++ b/components/connection.js
@@ -147,6 +147,7 @@ function readOptionsFromEnv () {
     environmentOptions.secure = protocol === 'https:'
     environmentOptions.host = hostname
     environmentOptions.port = port
+    environmentOptions.protocol = protocol
   }
 
   return environmentOptions
diff --git a/spec/tests/readenv.js b/spec/tests/readenv.js
index 7c818ec..c2e0ef6 100644
--- a/spec/tests/readenv.js
+++ b/spec/tests/readenv.js
@@ -12,10 +12,12 @@ test('connection options from environment', function (t) {
     t.equal(optionsFromEnv.port, port)
     t.equal(optionsFromEnv.secure, protocol === 'https:')
     t.equal(optionsFromEnv.host, hostname)
+    t.equal(optionsFromEnv.protocol, protocol)
   } else {
     t.false('port' in optionsFromEnv)
     t.false('secure' in optionsFromEnv)
     t.false('host' in optionsFromEnv)
+    t.false('protocol' in optionsFromEnv)
   }
 
   if (userIsSet) {