diff --git a/EgtMachKernel.rc b/EgtMachKernel.rc
index 775a56e..5d5c08f 100644
Binary files a/EgtMachKernel.rc and b/EgtMachKernel.rc differ
diff --git a/MachineCalc.cpp b/MachineCalc.cpp
index 30660d1..36f0733 100644
--- a/MachineCalc.cpp
+++ b/MachineCalc.cpp
@@ -1423,7 +1423,19 @@ Machine::AdjustAngleInStroke( const STROKE& Stroke, double& dAng) const
       dAng += ANG_FULL ;
    while ( dAng > Stroke.Max)
       dAng -= ANG_FULL ;
-   return ( dAng >= Stroke.Min   &&  dAng <= Stroke.Max) ;
+  // se asse rotante a corsa nulla
+   if ( Stroke.Max - Stroke.Min < EPS_ANG_SMALL) {
+      double dStrokeMid = ( Stroke.Min + Stroke.Max) / 2 ;
+      if ( abs( dAng - dStrokeMid) < EPS_ANG_SMALL) {
+         dAng = dStrokeMid ;
+         return true ;
+      }
+      else
+         return false ;
+   } 
+  // altrimenti assi rotante vero 
+   else
+      return ( dAng >= Stroke.Min   &&  dAng <= Stroke.Max) ;
 }
 
 //----------------------------------------------------------------------------