diff --git a/src/main/java/fr/pasteur/ida/zellige/steps/selection/classification/Classification.java b/src/main/java/fr/pasteur/ida/zellige/steps/selection/classification/Classification.java
index c16a3a2b675f4738faf7884f41ada22cf00930cb..d38fa05dc5c93720529c064a383228117a93e9da 100644
--- a/src/main/java/fr/pasteur/ida/zellige/steps/selection/classification/Classification.java
+++ b/src/main/java/fr/pasteur/ida/zellige/steps/selection/classification/Classification.java
@@ -134,11 +134,11 @@ public class Classification< T extends RealType< T > & NativeType< T > >
         /* Classification according to maximum amplitude */
         Img< BitType > amplitudeImg = AmplitudeClassification.run( input, factory, amplitudeThreshold );
 
-        ImageJFunctions.show( amplitudeImg );
+        ImageJFunctions.show( amplitudeImg, "amplitude image" );
         /* Classification according to local intensity*/
 
         Img< BitType > otsuImg = OtsuClassification.run( input, factory, otsuThreshold );
-        ImageJFunctions.show( Objects.requireNonNull( otsuImg ) );
+        ImageJFunctions.show( Objects.requireNonNull( otsuImg ), "otsu output" );
         /* Intersection of both classification */
         this.output = interClassification( amplitudeImg, amplitudeImg.factory(), otsuImg );
     }