diff --git a/src/transmissionReconstruction/detection/detection.cpp b/src/transmissionReconstruction/detection/detection.cpp
index 7e68e8f..8482d8d 100644
--- a/src/transmissionReconstruction/detection/detection.cpp
+++ b/src/transmissionReconstruction/detection/detection.cpp
@@ -292,7 +292,7 @@ namespace Recon {
                 expectedSOSWater, offsetElectronicSamples, detectionWindowSOS,
                 minSpeedOfSound, maxSpeedOfSound, gaussWindow);
 
-            diffStartSearch = timeResult1.startSearch - timeResult1.startSearch;
+            diffStartSearch = timeResult1.startSearch - timeResult2.startSearch;
         }
         auto _AscanBlock = timeResult1.AscanBlockProcessed;
         auto _AscanRefBlock = timeResult2.AscanBlockProcessed;