diff --git a/src/etekcity.c b/src/etekcity.c
index bf594c94..535165ae 100644
--- a/src/etekcity.c
+++ b/src/etekcity.c
@@ -115,6 +115,7 @@ struct etekcity_button_mapping {
 };
 
 static struct etekcity_button_mapping etekcity_button_mapping[] = {
+	{ 0, RATBAG_BUTTON_TYPE_NONE },
 	{ 1, RATBAG_BUTTON_TYPE_LEFT },
 	{ 2, RATBAG_BUTTON_TYPE_RIGHT },
 	{ 3, RATBAG_BUTTON_TYPE_MIDDLE },
@@ -290,13 +291,11 @@ etekcity_read_button(struct ratbag_device *device, struct ratbag_profile *profil
 	unsigned index = etekcity_button_to_index(button->index);
 
 	data = drv_data->profiles[profile->index][3 + index * 3];
-	if (data) {
-		log_debug(device->ratbag,
-			  " - button%d: %s (%02x) %s:%d\n",
-			  button->index, print_key(data), data, __FILE__, __LINE__);
-		button->type = etekcity_raw_to_button_type(data);
-		button->action_type = etekcity_raw_to_action(data, button->type);
-	}
+	log_debug(device->ratbag,
+		  " - button%d: %s (%02x) %s:%d\n",
+		  button->index, print_key(data), data, __FILE__, __LINE__);
+	button->type = etekcity_raw_to_button_type(data);
+	button->action_type = etekcity_raw_to_action(data, button->type);
 }
 
 static int
diff --git a/src/libratbag.h b/src/libratbag.h
index 1d62e4aa..9b86f025 100644
--- a/src/libratbag.h
+++ b/src/libratbag.h
@@ -500,6 +500,9 @@ enum ratbag_button_type {
 	RATBAG_BUTTON_TYPE_KEY_REFRESH,
 	RATBAG_BUTTON_TYPE_KEY_HOMEPAGE,
 	RATBAG_BUTTON_TYPE_KEY_SEARCH,
+
+	/* disabled button */
+	RATBAG_BUTTON_TYPE_NONE,
 };
 
 /**
diff --git a/tools/ratbag-command.c b/tools/ratbag-command.c
index ae91c48d..2a9951cf 100644
--- a/tools/ratbag-command.c
+++ b/tools/ratbag-command.c
@@ -174,6 +174,9 @@ button_type_to_str(enum ratbag_button_type type)
 	case RATBAG_BUTTON_TYPE_KEY_REFRESH:	str = "key refresh"; break;
 	case RATBAG_BUTTON_TYPE_KEY_HOMEPAGE:	str = "key homepage"; break;
 	case RATBAG_BUTTON_TYPE_KEY_SEARCH:	str = "key search"; break;
+
+	/* disabled button */
+	case RATBAG_BUTTON_TYPE_NONE:		str = "none"; break;
 	}
 
 	return str;