diff --git a/src/main/java/fr/pasteur/ida/zellige/ReferenceSurfaceExtraction.java b/src/main/java/fr/pasteur/ida/zellige/ReferenceSurfaceExtraction.java
index 55ede0a345294c377124ee845176b77688d4189f..d7165612897a2f8c6ebb2b1ba8bdec8302b4e4e8 100644
--- a/src/main/java/fr/pasteur/ida/zellige/ReferenceSurfaceExtraction.java
+++ b/src/main/java/fr/pasteur/ida/zellige/ReferenceSurfaceExtraction.java
@@ -92,7 +92,7 @@ public class ReferenceSurfaceExtraction< T extends RealType< T > & NativeType< T
         Img< UnsignedShortType > smoothed = interpolated.copy();
 //        ImageJFunctions.show( smoothed, "smoothed" );
         // Second step:  smooth the elevation map with gaussian blur
-//        Utils.gaussConvolution( interpolated, smoothed, new double[]{ 1.0, 1.0 } );
+        Utils.gaussConvolution( interpolated, smoothed, new double[]{ 1.0, 1.0 } );
         return smoothed;
     }