Changes in STEER:

[u/mrichter/AliRoot.git] / FMD / AliFMDESDRevertexer.cxx

diff --git a/FMD/AliFMDESDRevertexer.cxx b/FMD/AliFMDESDRevertexer.cxx
index 1c2a497d0f551e8010051217d397a45e65d5555a..a0624b67f8e734aca748755aacb8751bcb7b48d9 100644 (file)
--- a/FMD/AliFMDESDRevertexer.cxx
+++ b/FMD/AliFMDESDRevertexer.cxx
@@ -88,7 +88,7 @@ AliFMDESDRevertexer::PhysicalCoordinates(UShort_t  det,
   if (x == 0 && y == 0 && z == 0) return kFALSE;
   
   // Correct for vertex offset. 
-  z     += vz;
+  z     -= vz;
   phi   =  TMath::ATan2(y, x);
   r     =  TMath::Sqrt(y * y + x * x);
   theta =  TMath::ATan2(r, z);