diff --git a/src/backend/file/io-gncxml-v2.h b/src/backend/file/io-gncxml-v2.h
index 965cc7d7c2..2d72bc6fc4 100644
--- a/src/backend/file/io-gncxml-v2.h
+++ b/src/backend/file/io-gncxml-v2.h
@@ -40,6 +40,7 @@
 #include "gnc-commodity.h"
 #include "gnc-engine.h"
 #include "gnc-pricedb.h"
+#include "gnc-session.h"
 #include "SchedXaction.h"
 
 #include "sixtp.h"