diff --git a/src/main/java/fr/pasteur/ida/zellige/steps/projection/ProjectionParameters.java b/src/main/java/fr/pasteur/ida/zellige/steps/projection/ProjectionParameters.java
index fb780012f2433c9c05119c2ac13058537e902554..57b0a24c389555fc3b3c94c0b760f23b587b405e 100644
--- a/src/main/java/fr/pasteur/ida/zellige/steps/projection/ProjectionParameters.java
+++ b/src/main/java/fr/pasteur/ida/zellige/steps/projection/ProjectionParameters.java
@@ -34,13 +34,16 @@ public class ProjectionParameters
 {
 
     private final int delta;
+    private final int offset;
     private final String projectionMethod;
 
 
     public ProjectionParameters( int delta, String projectionMethod ) throws DataValidationException
+    public ProjectionParameters( int delta, int offset, String projectionMethod )
     {
-        projectionParametersValidationCheck( delta, projectionMethod );
+
         this.delta = delta;
+        this.offset = delta;
         this.projectionMethod = projectionMethod;
     }