Index: /trunk/test/ExRootLHCOlympicsWriter.cpp
===================================================================
--- /trunk/test/ExRootLHCOlympicsWriter.cpp	(revision 9)
+++ /trunk/test/ExRootLHCOlympicsWriter.cpp	(revision 10)
@@ -17,4 +17,6 @@
 #include "TPaveText.h"
 #include "TLorentzVector.h"
+
+#include "TClonesArray.h"
 
 #include "ExRootAnalysis/ExRootClasses.h"