diff --git a/lib/handshake.js b/lib/handshake.js
index 83304ae..0d52a5e 100644
--- a/lib/handshake.js
+++ b/lib/handshake.js
@@ -12,7 +12,15 @@ function sha1 (input) {
   return shasum.digest('hex');
 }
 
-function getUserHome () {
+function getUid() {
+  if ('DBUS_UID' in process.env)
+    return Number(process.env.DBUS_UID);
+  if ('getuid' in process)
+    return process.getuid();
+  return null
+}
+
+function getUserHome() {
   return process.env[process.platform.match(/$win/) ? 'USERPROFILE' : 'HOME'];
 }
 
@@ -33,7 +41,8 @@ function getCookie (context, id, cb) {
         )
       );
     }
-    if ('getuid' in process && stat.uid !== process.getuid()) {
+    const uid = getUid();
+    if (uid !== null && stat.uid !== uid) {
       return cb(
         new Error(
           'Keyrings directory is not owned by the current user. Aborting authentication!'
@@ -74,7 +83,7 @@ function tryAuth (stream, methods, cb) {
   }
 
   const authMethod = methods.shift();
-  const uid = 'getuid' in process ? process.getuid() : 0;
+  const uid = getUid() || 0;
   const id = hexlify(uid);
 
   function beginOrNextAuth () {