diff --git a/cmdutils.h b/cmdutils.h
index f1b69f95b7..d90ad4549d 100644
--- a/cmdutils.h
+++ b/cmdutils.h
@@ -52,7 +52,7 @@ void register_exit(void (*cb)(int ret));
 /**
  * Wraps exit with a program-specific cleanup routine.
  */
-void exit_program(int ret);
+void exit_program(int ret) av_noreturn;
 
 /**
  * Initialize the cmdutils option system, in particular