diff --git a/src/hidpp-generic.c b/src/hidpp-generic.c
index 9862c5c3..15ee135c 100644
--- a/src/hidpp-generic.c
+++ b/src/hidpp-generic.c
@@ -146,7 +146,7 @@ hidpp20_1b04_get_logical_mapping(uint16_t value)
 			return &map->action;
 	}
 
-	return RATBAG_BUTTON_TYPE_UNKNOWN;
+	return NULL;
 }
 
 uint16_t