diff --git a/vvp/schedule.cc b/vvp/schedule.cc
index 9d12b5035..5e842bcca 100644
--- a/vvp/schedule.cc
+++ b/vvp/schedule.cc
@@ -1080,7 +1080,6 @@ vvp_time64_t schedule_simtime(void)
 
 extern void vpiEndOfCompile();
 extern void vpiStartOfSim();
-extern void vpiPostsim();
 extern void vpiNextSimTime(void);
 
 static bool sim_at_rosync = false;
diff --git a/vvp/schedule.h b/vvp/schedule.h
index 70cace8cd..4656ecdf4 100644
--- a/vvp/schedule.h
+++ b/vvp/schedule.h
@@ -1,7 +1,7 @@
 #ifndef IVL_schedule_H
 #define IVL_schedule_H
 /*
- * Copyright (c) 2001-2021 Stephen Williams (steve@icarus.com)
+ * Copyright (c) 2001-2026 Stephen Williams (steve@icarus.com)
  *
  *    This source code is free software; you can redistribute it
  *    and/or modify it in source code form under the terms of the GNU
@@ -216,4 +216,7 @@ extern unsigned long count_prop_events;
 extern unsigned long count_thread_events;
 extern unsigned long count_event_pool;
 
+// Run the post simulation callbacks.
+extern void vpiPostsim(void);
+
 #endif /* IVL_schedule_H */