diff --git a/Python/thread.c b/Python/thread.c
index 5e7fc6c..c9356dc 100644
--- a/Python/thread.c
+++ b/Python/thread.c
@@ -75,7 +75,8 @@
 
 static void PyThread__init_thread(void); /* Forward */
 
-void PyThread_init_thread(void)
+void
+PyThread_init_thread(void)
 {
 #ifdef Py_DEBUG
 	char *p = getenv("THREADDEBUG");