diff --git a/ScalliGraph b/ScalliGraph
index c1a5fb613b..3891a432b6 160000
--- a/ScalliGraph
+++ b/ScalliGraph
@@ -1 +1 @@
-Subproject commit c1a5fb613ba4152455de77fa594e6e604aa0546b
+Subproject commit 3891a432b6508da46a2db6d4595c6ed992c4f5da
diff --git a/thehive/app/org/thp/thehive/controllers/v0/ObservableCtrl.scala b/thehive/app/org/thp/thehive/controllers/v0/ObservableCtrl.scala
index 8853f0c9cc..4ca40c5ddd 100644
--- a/thehive/app/org/thp/thehive/controllers/v0/ObservableCtrl.scala
+++ b/thehive/app/org/thp/thehive/controllers/v0/ObservableCtrl.scala
@@ -420,7 +420,6 @@ class PublicObservable @Inject() (
     Query[Traversal.V[Observable], Traversal.V[Case]]("case", (observableSteps, _) => observableSteps.`case`),
     Query[Traversal.V[Observable], Traversal.V[Alert]]("alert", (observableSteps, _) => observableSteps.alert)
   )
-  lazy val hasher: Hasher = Hasher("SHA-256")
   override val publicProperties: PublicProperties = PublicPropertyListBuilder[Observable]
     .property("status", UMapping.string)(_.select(_.constant("Ok")).readonly)
     .property("startDate", UMapping.date)(_.select(_._createdAt).readonly)
diff --git a/thehive/app/org/thp/thehive/models/Observable.scala b/thehive/app/org/thp/thehive/models/Observable.scala
index 63d6b21c1c..62902a69f0 100644
--- a/thehive/app/org/thp/thehive/models/Observable.scala
+++ b/thehive/app/org/thp/thehive/models/Observable.scala
@@ -7,7 +7,6 @@ import org.thp.scalligraph.utils.Hasher
 import org.thp.scalligraph.{BuildEdgeEntity, BuildVertexEntity, EntityId}
 
 import java.util.Date
-import scala.util.Try
 
 @BuildEdgeEntity[Observable, KeyValue]
 case class ObservableKeyValue()
@@ -80,7 +79,7 @@ object UseHashToIndex extends ImmenseTermProcessor with ImmenseStringTermFilter
   private val hasher: Hasher      = Hasher("SHA-256")
 
   def hashToIndex(value: String): Option[String] =
-    if (value.length > termSizeLimit) Some(hasher.fromString(value).head.toString)
+    if (value.length > termSizeLimit) Some("sha256/" + hasher.fromString(value).head.toString)
     else None
 
   override def apply[V](vertex: Vertex, property: VertexProperty[V]): Boolean = {
@@ -95,7 +94,7 @@ object UseHashToIndex extends ImmenseTermProcessor with ImmenseStringTermFilter
                            |  message=${UMapping.string.optional.getProperty(vertex, "message").getOrElse("<not set>")}
                            |  tags=${UMapping.string.sequence.getProperty(vertex, "message").mkString(", ")}""".stripMargin)
             strProp.remove()
-            vertex.property(strProp.key(), hasher.fromString(currentValue).head.toString)
+            vertex.property(strProp.key(), "sha256/" + hasher.fromString(currentValue).head.toString)
           }
 
         case "Data" =>