diff --git a/src/eva2/server/go/problems/AbstractProblemDouble.java b/src/eva2/server/go/problems/AbstractProblemDouble.java
index f983c150..0bbf9572 100644
--- a/src/eva2/server/go/problems/AbstractProblemDouble.java
+++ b/src/eva2/server/go/problems/AbstractProblemDouble.java
@@ -49,6 +49,8 @@ public abstract class AbstractProblemDouble extends AbstractOptimizationProblem
 		}
 	}
 	
+	public void hideHideable() {}
+	
 	protected void cloneObjects(AbstractProblemDouble o) {
 		this.m_DefaultRange = o.m_DefaultRange;
 		this.m_Noise = o.m_Noise;