X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=FMD%2FAliFMDESDRevertexer.cxx;h=a0624b67f8e734aca748755aacb8751bcb7b48d9;hb=021f1396233849af0519d640048a94c092c2feba;hp=1c2a497d0f551e8010051217d397a45e65d5555a;hpb=50b9d1947a92138181a9aea4214fc66b6103331c;p=u%2Fmrichter%2FAliRoot.git

diff --git a/FMD/AliFMDESDRevertexer.cxx b/FMD/AliFMDESDRevertexer.cxx
index 1c2a497d0f5..a0624b67f8e 100644
--- 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);