diff --git a/src/reflectionReconstruction/preprocessData/preprocessAScanBlockForReflection.cpp b/src/reflectionReconstruction/preprocessData/preprocessAScanBlockForReflection.cpp
index f7dfc7d..3b23429 100644
--- a/src/reflectionReconstruction/preprocessData/preprocessAScanBlockForReflection.cpp
+++ b/src/reflectionReconstruction/preprocessData/preprocessAScanBlockForReflection.cpp
@@ -432,6 +432,7 @@ namespace Recon {
         // debugOutput.snr = dOutSnr;
         // debugOutput.snrPass = dOutSnrPass;
         }
+        Aurora::compareSet(valid,0,1,Aurora::NE);
         result.AscanBlock = AscanBlock;
         result.usedData = valid;
         return result;