From 31fa73518ba573142c5f688b7135874d4970731d Mon Sep 17 00:00:00 2001
From: Blaz Kristan <blaz@kristan-sp.si>
Date: Mon, 30 Jan 2023 17:11:14 +0100
Subject: [PATCH] Bugfix. #3064

---
 wled00/FX_fcn.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/wled00/FX_fcn.cpp b/wled00/FX_fcn.cpp
index 235c61d0f..1688d737c 100644
--- a/wled00/FX_fcn.cpp
+++ b/wled00/FX_fcn.cpp
@@ -1611,7 +1611,7 @@ void WS2812FX::deserializeMap(uint8_t n) {
     customMappingSize  = map.size();
     customMappingTable = new uint16_t[customMappingSize];
     for (uint16_t i=0; i<customMappingSize; i++) {
-      customMappingTable[i] = (uint16_t) map[i];
+      customMappingTable[i] = (uint16_t) (map[i]<0 ? 0xFFFFU : map[i]);
     }
   }