diff --git a/src/absinthe.c b/src/absinthe.c
index fb5f940..02461c4 100644
--- a/src/absinthe.c
+++ b/src/absinthe.c
@@ -104,7 +104,7 @@ setup(absn_server *server)
 	server->scene_layout = wlr_scene_attach_output_layout(server->scene,
 	    server->output_layout);
 
-	/* windows lists */
+	/* toplevels lists */
 	wl_list_init(&server->toplevels);
 	wl_list_init(&server->focus_stack);
 
diff --git a/src/layer-surface.c b/src/layer-surface.c
index 321900d..d3ca7ca 100644
--- a/src/layer-surface.c
+++ b/src/layer-surface.c
@@ -1,16 +1,29 @@
+#include "types.h"
+
 void
 layer_surface_map(struct wl_listener *listener, void *data)
 {
+	UNUSED(listener);
+	UNUSED(data);
 }
+
 void
 layer_surface_unmap(struct wl_listener *listener, void *data)
 {
+	UNUSED(listener);
+	UNUSED(data);
 }
+
 void
 layer_surface_commit(struct wl_listener *listener, void *data)
 {
+	UNUSED(listener);
+	UNUSED(data);
 }
+
 void
 layer_surface_destroy(struct wl_listener *listener, void *data)
 {
+	UNUSED(listener);
+	UNUSED(data);
 }