diff --git a/Geo/GRbf.cpp b/Geo/GRbf.cpp
index 4a0984541d457c302a1dd43e5c519e5a2867bd29..52de9e6d0e12c4d6af27e1e373fb2c3e71ffc853 100644
--- a/Geo/GRbf.cpp
+++ b/Geo/GRbf.cpp
@@ -59,7 +59,7 @@ GRbf::GRbf (double sizeBox, int variableEps, int rbfFun, std::map<MVertex*, SVec
 {
 
   allCenters.resize(allNodes.size(),3);
-  double tol=  8.e-2*sBox;
+  double tol=  1.e-2*sBox;
 
   //remove duplicate vertices
   //add bc nodes