diff --git a/src/Orchard.Web/Modules/Orchard.MediaLibrary/Migrations.cs b/src/Orchard.Web/Modules/Orchard.MediaLibrary/Migrations.cs
index 3f05470d5..091eda1c3 100644
--- a/src/Orchard.Web/Modules/Orchard.MediaLibrary/Migrations.cs
+++ b/src/Orchard.Web/Modules/Orchard.MediaLibrary/Migrations.cs
@@ -121,5 +121,14 @@ namespace Orchard.MediaLibrary {
 
             return 4;
         }
+
+        public int UpdateFrom4() {
+
+            SchemaBuilder.AlterTable("MediaPartRecord", t => t
+                .CreateIndex("IDX_MediaPartRecord_FolderPath", "FolderPath")
+            );
+            
+            return 5;
+        }
     }
 }
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