diff --git a/plugins/TwitterBridge/TwitterBridgePlugin.php b/plugins/TwitterBridge/TwitterBridgePlugin.php
index 3284d10563..8d14744090 100644
--- a/plugins/TwitterBridge/TwitterBridgePlugin.php
+++ b/plugins/TwitterBridge/TwitterBridgePlugin.php
@@ -30,7 +30,7 @@ if (!defined('STATUSNET')) {
     exit(1);
 }
 
-require_once INSTALLDIR . '/plugins/TwitterBridge/twitter.php';
+require_once __DIR__ . '/twitter.php';
 
 /**
  * Plugin for sending and importing Twitter statuses
diff --git a/plugins/TwitterBridge/actions/twitterauthorization.php b/plugins/TwitterBridge/actions/twitterauthorization.php
index aace7e4f09..ce6af091e2 100644
--- a/plugins/TwitterBridge/actions/twitterauthorization.php
+++ b/plugins/TwitterBridge/actions/twitterauthorization.php
@@ -32,7 +32,7 @@ if (!defined('STATUSNET') && !defined('LACONICA')) {
     exit(1);
 }
 
-require_once INSTALLDIR . '/plugins/TwitterBridge/twitter.php';
+require_once dirname(__DIR__) . '/twitter.php';
 
 /**
  * Class for doing OAuth authentication against Twitter
diff --git a/plugins/TwitterBridge/actions/twitterlogin.php b/plugins/TwitterBridge/actions/twitterlogin.php
index 379e136045..ee00714c9f 100644
--- a/plugins/TwitterBridge/actions/twitterlogin.php
+++ b/plugins/TwitterBridge/actions/twitterlogin.php
@@ -32,7 +32,7 @@ if (!defined('STATUSNET') && !defined('LACONICA')) {
     exit(1);
 }
 
-require_once INSTALLDIR . '/plugins/TwitterBridge/twitter.php';
+require_once dirname(__DIR__) . '/twitter.php';
 
 /**
  * Page for logging in with Twitter
diff --git a/plugins/TwitterBridge/actions/twittersettings.php b/plugins/TwitterBridge/actions/twittersettings.php
index cc3e34f345..37abb4d272 100644
--- a/plugins/TwitterBridge/actions/twittersettings.php
+++ b/plugins/TwitterBridge/actions/twittersettings.php
@@ -31,7 +31,7 @@ if (!defined('STATUSNET') && !defined('LACONICA')) {
     exit(1);
 }
 
-require_once INSTALLDIR . '/plugins/TwitterBridge/twitter.php';
+require_once dirname(__DIR__) . '/twitter.php';
 
 /**
  * Settings for Twitter integration
diff --git a/plugins/TwitterBridge/daemons/synctwitterfriends.php b/plugins/TwitterBridge/daemons/synctwitterfriends.php
index 651c4d34da..8b8ffbfd49 100755
--- a/plugins/TwitterBridge/daemons/synctwitterfriends.php
+++ b/plugins/TwitterBridge/daemons/synctwitterfriends.php
@@ -31,7 +31,7 @@ Batch script for synching local friends with Twitter friends.
 END_OF_TRIM_HELP;
 
 require_once INSTALLDIR . '/scripts/commandline.inc';
-require_once INSTALLDIR . '/plugins/TwitterBridge/twitter.php';
+require_once dirname(__DIR__) . '/twitter.php';
 
 /**
  * Daemon to sync local friends with Twitter friends
diff --git a/plugins/TwitterBridge/daemons/twitterstatusfetcher.php b/plugins/TwitterBridge/daemons/twitterstatusfetcher.php
index b4b78dc80a..74fc77cd79 100755
--- a/plugins/TwitterBridge/daemons/twitterstatusfetcher.php
+++ b/plugins/TwitterBridge/daemons/twitterstatusfetcher.php
@@ -39,7 +39,7 @@ END_OF_TRIM_HELP;
 require_once INSTALLDIR . '/scripts/commandline.inc';
 require_once INSTALLDIR . '/lib/common.php';
 require_once INSTALLDIR . '/lib/daemon.php';
-require_once INSTALLDIR . '/plugins/TwitterBridge/twitter.php';
+require_once dirname(__DIR__) . '/twitter.php';
 
 /**
  * Fetch statuses from Twitter
diff --git a/plugins/TwitterBridge/lib/tweetinqueuehandler.php b/plugins/TwitterBridge/lib/tweetinqueuehandler.php
index 0ab7480305..cc0c05f9a6 100644
--- a/plugins/TwitterBridge/lib/tweetinqueuehandler.php
+++ b/plugins/TwitterBridge/lib/tweetinqueuehandler.php
@@ -19,7 +19,7 @@
 
 if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
 
-require_once INSTALLDIR . '/plugins/TwitterBridge/twitter.php';
+require_once dirname(__DIR__) . '/twitter.php';
 
 /**
  * Queue handler to deal with incoming Twitter status updates, as retrieved by
diff --git a/plugins/TwitterBridge/lib/twitterimport.php b/plugins/TwitterBridge/lib/twitterimport.php
index 41d8ac9d46..5258bfc2c9 100644
--- a/plugins/TwitterBridge/lib/twitterimport.php
+++ b/plugins/TwitterBridge/lib/twitterimport.php
@@ -31,7 +31,7 @@ if (!defined('STATUSNET')) {
     exit(1);
 }
 
-require_once INSTALLDIR . '/plugins/TwitterBridge/twitter.php';
+require_once dirname(__DIR__) . '/twitter.php';
 
 /**
  * Encapsulation of the Twitter status -> notice incoming bridge import.
diff --git a/plugins/TwitterBridge/lib/twitterqueuehandler.php b/plugins/TwitterBridge/lib/twitterqueuehandler.php
index 644ce17871..bba1b8b2bc 100644
--- a/plugins/TwitterBridge/lib/twitterqueuehandler.php
+++ b/plugins/TwitterBridge/lib/twitterqueuehandler.php
@@ -19,7 +19,7 @@
 
 if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
 
-require_once INSTALLDIR . '/plugins/TwitterBridge/twitter.php';
+require_once dirname(__DIR__) . '/twitter.php';
 
 class TwitterQueueHandler extends QueueHandler
 {
diff --git a/plugins/TwitterBridge/tweetctlqueuehandler.php b/plugins/TwitterBridge/tweetctlqueuehandler.php
index 4c8bef463e..d7636c373e 100644
--- a/plugins/TwitterBridge/tweetctlqueuehandler.php
+++ b/plugins/TwitterBridge/tweetctlqueuehandler.php
@@ -19,7 +19,7 @@
 
 if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
 
-require_once INSTALLDIR . '/plugins/TwitterBridge/twitter.php';
+require_once __DIR__ . '/twitter.php';
 
 /**
  * Queue handler to deal with incoming Twitter status updates, as retrieved by