diff --git a/src/main/java/fr/inria/corese/core/Graph.java b/src/main/java/fr/inria/corese/core/Graph.java
index 4aa1a7816..0af9fa025 100755
--- a/src/main/java/fr/inria/corese/core/Graph.java
+++ b/src/main/java/fr/inria/corese/core/Graph.java
@@ -1042,6 +1042,10 @@ public EdgeManagerIndexer getIndex() {
         return getSubjectIndex();
     }
 
+    public int getIndexSize() {
+        return getIndex().size();
+    }
+
     void startUpdate() {
     }
 
diff --git a/src/main/java/fr/inria/corese/core/query/ProducerImpl.java b/src/main/java/fr/inria/corese/core/query/ProducerImpl.java
index 754a5d05b..0d5fc4db3 100644
--- a/src/main/java/fr/inria/corese/core/query/ProducerImpl.java
+++ b/src/main/java/fr/inria/corese/core/query/ProducerImpl.java
@@ -4,7 +4,6 @@
 import fr.inria.corese.core.Graph;
 import fr.inria.corese.core.Index;
 import fr.inria.corese.core.api.DataBroker;
-import fr.inria.corese.core.index.EdgeManagerIndexer;
 import fr.inria.corese.core.kgram.api.core.*;
 import fr.inria.corese.core.kgram.api.query.Environment;
 import fr.inria.corese.core.kgram.api.query.Matcher;
@@ -902,7 +901,7 @@ public int getSize(int type) {
             case ALL:
                 return this.getGraph().size();
             case PREDICATE:
-                return this.getGraph().getIndex().size();
+                return this.getGraph().getIndexSize();
             // to do for SUBJECT | OBJECT
             // for the moment, cannot get these values directIProducerQP
             case SUBJECT: