diff --git a/EgtGraphics.rc b/EgtGraphics.rc
index 5c4029d..d5faa82 100644
Binary files a/EgtGraphics.rc and b/EgtGraphics.rc differ
diff --git a/SceneBasic.cpp b/SceneBasic.cpp
index b9c7371..f82e1e0 100644
--- a/SceneBasic.cpp
+++ b/SceneBasic.cpp
@@ -29,7 +29,7 @@ using namespace std ;
 //--------------------------- Constants --------------------------------------
 static const double MIN_EXTENSION = 250 ;
 static const double MIN_W_H = 0.01 ;
-static const double MIN_ZCLIP_EXT = 5000 ;
+static const double MIN_ZCLIP_EXT = 25000 ;
 
 
 //----------------------------------------------------------------------------