diff --git a/cmd/zed/zed_exec.c b/cmd/zed/zed_exec.c
index 03dcd03ac..369c4b695 100644
--- a/cmd/zed/zed_exec.c
+++ b/cmd/zed/zed_exec.c
@@ -187,11 +187,14 @@ _zed_exec_fork_child(uint64_t eid, const char *dir, const char *prog,
 
 static void
 _nop(int sig)
-{}
+{
+	(void) sig;
+}
 
 static void *
 _reap_children(void *arg)
 {
+	(void) arg;
 	struct launched_process_node node, *pnode;
 	pid_t pid;
 	int status;