Index: /trunk/Mars/mdrs/MCalibrateDrsTimes.cc
===================================================================
--- /trunk/Mars/mdrs/MCalibrateDrsTimes.cc	(revision 19314)
+++ /trunk/Mars/mdrs/MCalibrateDrsTimes.cc	(revision 19315)
@@ -140,5 +140,5 @@
     //for (UInt_t hw=8; hw<npix; hw+=9)
     {
-        const UInt_t sw = idx[hw];
+        const Int_t sw = idx[hw];
         if (sw>=fSignals->GetSize())
             continue;