diff --git a/STEER/AOD/AliAODHeader.h b/STEER/AOD/AliAODHeader.h
index f3d53f9cb38..dd9fea4226a 100644
--- a/STEER/AOD/AliAODHeader.h
+++ b/STEER/AOD/AliAODHeader.h
@@ -263,7 +263,7 @@ class AliAODHeader : public AliVAODHeader {
   Float_t     fT0spread[kT0SpreadSize]; // spread of time distributions: (TOA+T0C/2), T0A, T0C, (T0A-T0C)/2
   TBits   fIRInt2InteractionsMap;  // map of the Int2 events (normally 0TVX) near the event, that's Int2Id-EventId in a -90 to 90 window
   TBits   fIRInt1InteractionsMap;  // map of the Int1 events (normally V0A&V0C) near the event, that's Int1Id-EventId in a -90 to 90 window
-  ClassDef(AliAODHeader, 24);
+  ClassDef(AliAODHeader, 25);
 };
 inline
 void AliAODHeader::SetCentrality(const AliCentrality* cent)      { 
diff --git a/STEER/CMakelibSTEERBase.pkg b/STEER/CMakelibSTEERBase.pkg
index 3731a820ab0..32942c08e73 100644
--- a/STEER/CMakelibSTEERBase.pkg
+++ b/STEER/CMakelibSTEERBase.pkg
@@ -10,6 +10,7 @@ set ( SRCS
     STEERBase/AliVEvent.cxx 
     STEERBase/AliMixedEvent.cxx 
     STEERBase/AliVHeader.cxx 
+    STEERBase/AliVAODHeader.cxx 
     STEERBase/AliVEventHandler.cxx 
     STEERBase/AliVEventPool.cxx 
     STEERBase/AliVCuts.cxx 
diff --git a/STEER/STEERBase/AliVAODHeader.cxx b/STEER/STEERBase/AliVAODHeader.cxx
new file mode 100644
index 00000000000..be5045958f7
--- /dev/null
+++ b/STEER/STEERBase/AliVAODHeader.cxx
@@ -0,0 +1,4 @@
+// We need the.cxx for the classimp and for CMake to compile the class
+#include "AliVAODHeader.h"
+
+ClassImp(AliVAODHeader);
diff --git a/STEER/STEERBaseLinkDef.h b/STEER/STEERBaseLinkDef.h
index 34c917e5666..2a17acafbd2 100644
--- a/STEER/STEERBaseLinkDef.h
+++ b/STEER/STEERBaseLinkDef.h
@@ -17,6 +17,7 @@
 #pragma link C++ class AliVVertex+;
 #pragma link C++ class AliVEvent+;
 #pragma link C++ class AliVHeader+;
+#pragma link C++ class AliVAODHeader+;
 #pragma link C++ class AliVEventHandler+;
 #pragma link C++ class AliVEventPool+;
 #pragma link C++ class AliVCuts+;