diff --git a/src/common/ceMatchedFilterHandling.cpp b/src/common/ceMatchedFilterHandling.cpp
index 8d71ef4..cb3e36f 100644
--- a/src/common/ceMatchedFilterHandling.cpp
+++ b/src/common/ceMatchedFilterHandling.cpp
@@ -48,7 +48,7 @@ Aurora::Matrix Recon::preprocessCE(Aurora::Matrix &aCE, double ceSampleFrequency
     aCE = aCE / Aurora::max(Aurora::abs(aCE)).getScalar(); 
     aCE = aCE / Aurora::sum(Aurora::abs(aCE)).getScalar(); 
     
-    Aurora::padding(aCE,expectedLength,0.0);
+    Aurora::padding(aCE,expectedLength-1,0.0);
 
     if (expectedLength<aCE.getDataSize()){
         aCE.forceReshape(expectedLength,1,1);