1 files changed, 2 insertions, 1 deletions

diff --git a/model-data/src/main/java/org/eclipse/viatra/solver/data/query/view/RelationView.java b/model-data/src/main/java/org/eclipse/viatra/solver/data/query/view/RelationView.java
index efd8e990..18d2692d 100644
--- a/model-data/src/main/java/org/eclipse/viatra/solver/data/query/view/RelationView.java
+++ b/model-data/src/main/java/org/eclipse/viatra/solver/data/query/view/RelationView.java
@@ -15,11 +15,12 @@ import org.eclipse.viatra.solver.data.query.internal.RelationViewKey;
 public abstract class RelationView<D>{
         protected final Model model;
         protected final Relation<D> representation;
-        RelationViewKey<D> key = new RelationViewKey<>(this, getArity());
+        private final RelationViewKey<D> key;
         
         protected RelationView(Model model, Relation<D> representation) {
                 this.model = model;
                 this.representation = representation;
+                key = new RelationViewKey<>(this, getArity());
         }
         
         public Model getModel() {