diff --git a/Event/xAOD/xAODJet/xAODJet/versions/JetContainer_v1.h b/Event/xAOD/xAODJet/xAODJet/versions/JetContainer_v1.h
index f7eed7b138eee84df72b4a5c5c59d6deb4d6953e..b7f28124d00f164f0473a18cc17dcc7d86e0d484 100644
--- a/Event/xAOD/xAODJet/xAODJet/versions/JetContainer_v1.h
+++ b/Event/xAOD/xAODJet/xAODJet/versions/JetContainer_v1.h
@@ -14,9 +14,6 @@
 // Local include(s):
 #include "xAODJet/versions/Jet_v1.h"
 
-// Declare IParticle as a base class of Jet_v1:
-DATAVECTOR_BASE( xAOD::Jet_v1, xAOD::IParticle );
-
 namespace xAOD {
    /// The container is a simple typedef for now
    typedef DataVector< xAOD::Jet_v1 > JetContainer_v1;
diff --git a/Event/xAOD/xAODJet/xAODJet/versions/Jet_v1.h b/Event/xAOD/xAODJet/xAODJet/versions/Jet_v1.h
index fff4300feddde92ad46c63b18a37f1bf70c43b91..612098c0f8924bd1eefedcf9b693173a18ff2279 100644
--- a/Event/xAOD/xAODJet/xAODJet/versions/Jet_v1.h
+++ b/Event/xAOD/xAODJet/xAODJet/versions/Jet_v1.h
@@ -360,6 +360,9 @@ namespace xAOD {
 
 } // namespace xAOD
 
+// Declare IParticle as a base class of Jet_v1:
+DATAVECTOR_BASE( xAOD::Jet_v1, xAOD::IParticle );
+
 #include "xAODJet/versions/Jet_v1.icc"
 
 #endif // XAODJET_VERSIONS_JET_V1_H