diff --git a/src/main/java/uk/ac/ebi/ega/accession/file/persistence/HistoricFileEntity.java b/src/main/java/uk/ac/ebi/ega/accession/file/persistence/HistoricFileEntity.java
index 55e85aa..dc6e2d3 100644
--- a/src/main/java/uk/ac/ebi/ega/accession/file/persistence/HistoricFileEntity.java
+++ b/src/main/java/uk/ac/ebi/ega/accession/file/persistence/HistoricFileEntity.java
@@ -33,7 +33,7 @@ public class HistoricFileEntity extends InactiveAccessionEntity<FileModel, Long>
     @Column(nullable = false)
     private HashType hashType;
 
-    @Column(nullable = false, unique = true)
+    @Column(nullable = false)
     private String hash;
 
     HistoricFileEntity() {