diff --git a/arch/arm/boards/at91sam9261ek/init.c b/arch/arm/boards/at91sam9261ek/init.c
index 636da12..8842cfe 100644
--- a/arch/arm/boards/at91sam9261ek/init.c
+++ b/arch/arm/boards/at91sam9261ek/init.c
@@ -180,7 +180,7 @@
 		at91_set_deglitch(keys[i].gpio, 1);
 	}
 
-	add_gpio_keys_device(-1, &gk_pdata);
+	add_gpio_keys_device(DEVICE_ID_DYNAMIC, &gk_pdata);
 }
 #else
 static void ek_add_device_keyboard_buttons(void) {}
diff --git a/arch/arm/boards/at91sam9m10g45ek/init.c b/arch/arm/boards/at91sam9m10g45ek/init.c
index f1c43cc..6ad3726 100644
--- a/arch/arm/boards/at91sam9m10g45ek/init.c
+++ b/arch/arm/boards/at91sam9m10g45ek/init.c
@@ -204,7 +204,7 @@
 		at91_set_deglitch(keys[i].gpio, 1);
 	}
 
-	add_gpio_keys_device(-1, &gk_pdata);
+	add_gpio_keys_device(DEVICE_ID_DYNAMIC, &gk_pdata);
 }
 #else
 static void ek_device_add_keyboard(void) {}