diff --git a/wled00/FX_fcn.cpp b/wled00/FX_fcn.cpp
index 3540ccde..f2d839f2 100644
--- a/wled00/FX_fcn.cpp
+++ b/wled00/FX_fcn.cpp
@@ -762,6 +762,7 @@ void Segment::refreshLightCapabilities() {
         if (segStartIdx > index) segStartIdx = index;
         if (segStopIdx  < index) segStopIdx  = index;
       }
+      if (segStartIdx == segStopIdx) segStopIdx++; // we only have 1 pixel segment
     }
   } else {
     // we are on the strip located after the matrix