diff --git a/src/osgPlugins/txp/trpage_warchive.cpp b/src/osgPlugins/txp/trpage_warchive.cpp
index c7fb5a098..ada4ff140 100644
--- a/src/osgPlugins/txp/trpage_warchive.cpp
+++ b/src/osgPlugins/txp/trpage_warchive.cpp
@@ -677,7 +677,7 @@ bool trpgwArchive::WriteTile(unsigned int x,unsigned int y,unsigned int lod, flo
 			    return false;
 		}
 
-		int64 pos = tileFile->Pos();
+		int32 pos = static_cast<int32>(tileFile->Pos());
 		if (!tileFile->Append(head,buf))
 			return false;
 		// Keep track of the fact that this went here
diff --git a/src/osgPlugins/txp/trpage_write.h b/src/osgPlugins/txp/trpage_write.h
index f6daaba9a..69af3efab 100644
--- a/src/osgPlugins/txp/trpage_write.h
+++ b/src/osgPlugins/txp/trpage_write.h
@@ -273,7 +273,7 @@ public:
 	public:
 		int x,y,lod;    // Identifying info for tile
 		float zmin,zmax;
-		int64 offset;  // Offset into file
+		int32 offset;  // Offset into file
 	};
 	class TileFile {
 	public: