diff --git a/Python/thread.c b/Python/thread.c
index fb0f6a2..2d80b09 100644
--- a/Python/thread.c
+++ b/Python/thread.c
@@ -126,6 +126,10 @@
 #include "thread_cthread.h"
 #endif
 
+#ifdef NT_THREADS
+#include "thread_nt.h"
+#endif
+
 /*
 #ifdef FOOBAR_THREADS
 #include "thread_foobar.h"