diff --git a/runtime/Server.cpp b/runtime/Server.cpp
index 33b435834..40fc414c6 100644
--- a/runtime/Server.cpp
+++ b/runtime/Server.cpp
@@ -63,6 +63,7 @@ Server::Server(quint16 port, QString key)
 
     // Initialise Python
     Py_NoSiteFlag=1;
+    Py_NoUserSiteDirectory=1;
     Py_DontWriteBytecodeFlag=1;
 
     PGA_APP_NAME_UTF8 = PGA_APP_NAME.toUtf8();