diff --git a/Python/pystate.c b/Python/pystate.c
index 92d08c4..65f9b7e 100644
--- a/Python/pystate.c
+++ b/Python/pystate.c
@@ -571,8 +571,8 @@
     return oldts;
 }
 
-__PyCodeExtraState* 
-__PyCodeExtraState_Get() {
+__PyCodeExtraState*
+__PyCodeExtraState_Get(void) {
     PyInterpreterState* interp = PyThreadState_Get()->interp;
 
     HEAD_LOCK();