diff --git a/format.c b/format.c
index b5f09649..5a295198 100644
--- a/format.c
+++ b/format.c
@@ -3098,7 +3098,7 @@ format_log_debug_cb(const char *key, const char *value, void *arg)
 void
 format_log_debug(struct format_tree *ft, const char *prefix)
 {
-	format_each(ft, format_log_debug_cb, prefix);
+	format_each(ft, format_log_debug_cb, (void *)prefix);
 }
 
 /* Walk each format. */
diff --git a/notify.c b/notify.c
index 8b2610c2..2510a394 100644
--- a/notify.c
+++ b/notify.c
@@ -200,7 +200,7 @@ notify_hook(struct cmdq_item *item, const char *name)
 	ne.client = cmdq_get_client(item);
 	ne.session = target->s;
 	ne.window = target->w;
-	ne.pane = target->wp->id;
+	ne.pane = (target->wp != NULL ? target->wp->id : -1);
 
 	ne.formats = format_create(NULL, NULL, 0, FORMAT_NOJOBS);
 	format_add(ne.formats, "hook", "%s", name);