diff --git a/OpenSim/Framework/Serialization/ArchiveConstants.cs b/OpenSim/Framework/Serialization/ArchiveConstants.cs
index d3557a714e..8715d0196d 100644
--- a/OpenSim/Framework/Serialization/ArchiveConstants.cs
+++ b/OpenSim/Framework/Serialization/ArchiveConstants.cs
@@ -127,6 +127,7 @@ namespace OpenSim.Framework.Serialization
             ASSET_TYPE_TO_EXTENSION[(sbyte)AssetType.TextureTGA]          = ASSET_EXTENSION_SEPARATOR + "texture.tga";
             ASSET_TYPE_TO_EXTENSION[(sbyte)OpenSimAssetType.Material]     = ASSET_EXTENSION_SEPARATOR + "material.xml";
             ASSET_TYPE_TO_EXTENSION[(sbyte)AssetType.Settings]            = ASSET_EXTENSION_SEPARATOR + "settings.bin";
+            ASSET_TYPE_TO_EXTENSION[(sbyte)AssetType.Material]            = ASSET_EXTENSION_SEPARATOR + "prmat.dat";
 
             EXTENSION_TO_ASSET_TYPE[ASSET_EXTENSION_SEPARATOR + "animation.bvh"]            = (sbyte)AssetType.Animation;
             EXTENSION_TO_ASSET_TYPE[ASSET_EXTENSION_SEPARATOR + "bodypart.txt"]             = (sbyte)AssetType.Bodypart;
@@ -149,6 +150,7 @@ namespace OpenSim.Framework.Serialization
             EXTENSION_TO_ASSET_TYPE[ASSET_EXTENSION_SEPARATOR + "texture.tga"]              = (sbyte)AssetType.TextureTGA;
             EXTENSION_TO_ASSET_TYPE[ASSET_EXTENSION_SEPARATOR + "material.xml"]             = (sbyte)OpenSimAssetType.Material;
             EXTENSION_TO_ASSET_TYPE[ASSET_EXTENSION_SEPARATOR + "settings.bin"]             = (sbyte)AssetType.Settings;
+            EXTENSION_TO_ASSET_TYPE[ASSET_EXTENSION_SEPARATOR + "prmat.dat"]                = (sbyte)AssetType.Material;
         }
 
         public static string CreateOarLandDataPath(LandData ld)