diff --git a/OpenSim/Region/CoreModules/Avatar/Inventory/Archiver/InventoryArchiveWriteRequest.cs b/OpenSim/Region/CoreModules/Avatar/Inventory/Archiver/InventoryArchiveWriteRequest.cs
index 42a4c7a47f..f002ad7a40 100644
--- a/OpenSim/Region/CoreModules/Avatar/Inventory/Archiver/InventoryArchiveWriteRequest.cs
+++ b/OpenSim/Region/CoreModules/Avatar/Inventory/Archiver/InventoryArchiveWriteRequest.cs
@@ -43,6 +43,7 @@ using OpenSim.Services.Interfaces;
 using Ionic.Zlib;
 using GZipStream = Ionic.Zlib.GZipStream;
 using CompressionMode = Ionic.Zlib.CompressionMode;
+using CompressionLevel = Ionic.Zlib.CompressionLevel;
 using PermissionMask = OpenSim.Framework.PermissionMask;
 
 namespace OpenSim.Region.CoreModules.Avatar.Inventory.Archiver
diff --git a/OpenSim/Region/CoreModules/World/Archiver/ArchiveWriteRequest.cs b/OpenSim/Region/CoreModules/World/Archiver/ArchiveWriteRequest.cs
index d67bdcecc1..cb2c7f19d6 100644
--- a/OpenSim/Region/CoreModules/World/Archiver/ArchiveWriteRequest.cs
+++ b/OpenSim/Region/CoreModules/World/Archiver/ArchiveWriteRequest.cs
@@ -44,6 +44,7 @@ using OpenSim.Region.Framework.Scenes;
 using Ionic.Zlib;
 using GZipStream = Ionic.Zlib.GZipStream;
 using CompressionMode = Ionic.Zlib.CompressionMode;
+using CompressionLevel = Ionic.Zlib.CompressionLevel;
 using OpenSim.Framework.Serialization.External;
 using PermissionMask = OpenSim.Framework.PermissionMask;