diff --git a/Python/thread_wince.h b/Python/thread_wince.h
index a5423f6..efce15c 100644
--- a/Python/thread_wince.h
+++ b/Python/thread_wince.h
@@ -99,7 +99,7 @@
 	do_PyThread_exit_prog(status, 0);
 }
 
-void PyThread__exit_prog _P1(int status)
+void PyThread__exit_prog(int status)
 {
 	do_PyThread_exit_prog(status, 1);
 }