diff --git a/API_GdbGetSurf.cpp b/API_GdbGetSurf.cpp
index 7651988..207811d 100644
--- a/API_GdbGetSurf.cpp
+++ b/API_GdbGetSurf.cpp
@@ -51,9 +51,9 @@ __stdcall EgtSurfFrChunkCount( int nId)
 
 //----------------------------------------------------------------------------
 int
-__stdcall EgtSurfFrChunkSimpleClassify( int nId1, int nChunk1, int nId2, int nChunk2)
+__stdcall EgtSurfFrChunkSimpleClassify( int nId1, int nChunk1, int nId2, int nChunk2, double dToler)
 {
-   return ExeSurfFrChunkSimpleClassify( nId1, nChunk1, nId2, nChunk2) ;
+   return ExeSurfFrChunkSimpleClassify( nId1, nChunk1, nId2, nChunk2, dToler) ;
 }
 
 //----------------------------------------------------------------------------
diff --git a/EgtInterface.rc b/EgtInterface.rc
index 2211b6d..7018ade 100644
Binary files a/EgtInterface.rc and b/EgtInterface.rc differ