diff --git a/src/eval.c b/src/eval.c
index cc30308..0a12ff9 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -15064,7 +15064,7 @@
  * Called once in a while: check if any jobs with an "exit-cb" have ended.
  */
     void
-job_check_ended()
+job_check_ended(void)
 {
     static time_t   last_check = 0;
     time_t	    now;