diff --git a/wiz.c b/wiz.c
index 4dab49b..b2ac72e 100644
--- a/wiz.c
+++ b/wiz.c
@@ -21,8 +21,6 @@ static struct wl_seat *seat;
 static const struct ext_idle_notification_v1_listener idlelistener;
 static const struct wl_registry_listener reglistener;
 
-pid_t cpid;
-
 struct Events {
   uint32_t delay; /* in ms */
   char **idlecmd;
@@ -94,6 +92,8 @@ static const struct ext_idle_notification_v1_listener idlelistener = {
 static void
 run(char **cmd)
 {
+  static pid_t cpid;
+
   waitpid(-1, NULL, WNOHANG);
   if (killchild && cpid)
     kill(cpid, SIGINT);