these builtins have to be initialized
diff --git a/Include/Python.h b/Include/Python.h
index 969ef0f..5c6e1f2 100644
--- a/Include/Python.h
+++ b/Include/Python.h
@@ -113,6 +113,7 @@
 #include "import.h"
 
 #include "abstract.h"
+#include "bltinmodule.h"
 
 #include "compile.h"
 #include "eval.h"