diff --git a/pyIocApp/setup.c b/pyIocApp/setup.c
index 6d02940..8a579cd 100644
--- a/pyIocApp/setup.c
+++ b/pyIocApp/setup.c
@@ -114,7 +114,7 @@ static void setupPyPath(void)
 
 static void pySetupReg(void)
 {
-    Py_Initialize();
+    Py_InitializeEx(0);
     PyEval_InitThreads();
 
     setupPyPath();