Index: trunk/Mars/mcamera/MCameraDC.cc
===================================================================
--- trunk/Mars/mcamera/MCameraDC.cc	(revision 17385)
+++ trunk/Mars/mcamera/MCameraDC.cc	(revision 20096)
@@ -106,5 +106,5 @@
 Float_t MCameraDC::GetMin() const
 {
-    Float_t val = (UInt_t)-1;
+    Float_t val = std::numeric_limits<Float_t>::max();
     for (int i=0; i<fArray.GetSize(); i++)
         val = TMath::Min(val, GetCurrent(i));