Index: trunk/Mars/melectronics/MAvalanchePhotoDiode.cc
===================================================================
--- trunk/Mars/melectronics/MAvalanchePhotoDiode.cc	(revision 17682)
+++ trunk/Mars/melectronics/MAvalanchePhotoDiode.cc	(revision 17769)
@@ -243,5 +243,5 @@
     const UInt_t rndm = gRandom->Poisson(prob);
 
-    for (int i=0; i<rndm; i++)
+    for (UInt_t i=0; i<rndm; i++)
     {
         // Get a random neighbor which is hit.