diff --git a/wled00/FX.cpp b/wled00/FX.cpp
index 36a40afd..0f6bb40a 100644
--- a/wled00/FX.cpp
+++ b/wled00/FX.cpp
@@ -3552,7 +3552,10 @@ uint16_t mode_exploding_fireworks(void)
   if (SEGLEN == 1) return mode_static();
   const uint16_t cols = strip.isMatrix ? SEGMENT.virtualWidth() : 1;
   const uint16_t rows = strip.isMatrix ? SEGMENT.virtualHeight() : SEGMENT.virtualLength();
-  if (SEGENV.call == 0) SEGENV.setUpLeds();   // WLEDMM use lossless getPixelColor()
+  if (SEGENV.call == 0) {
+    SEGENV.setUpLeds();   // WLEDMM use lossless getPixelColor()
+    SEGMENT.fill(BLACK);
+  }
 
   //allocate segment data
   uint16_t maxData = FAIR_DATA_PER_SEG; //ESP8266: 256 ESP32: 640