diff --git a/app/src/keymap.c b/app/src/keymap.c
index 331dfb6a..03aec3d5 100644
--- a/app/src/keymap.c
+++ b/app/src/keymap.c
@@ -85,6 +85,8 @@ static inline int set_layer_state(uint8_t layer, bool state) {
         return -EINVAL;
     }
 
+    printk("GUIDO: highest layer active: %d\n", zmk_keymap_highest_layer_active());
+    
     if (state) {
         printk("GUIDO: layer %d\n", layer);
     }