diff --git a/src/libmsc/smpp_smsc.h b/src/libmsc/smpp_smsc.h
index 0f1d35c..755e685 100644
--- a/src/libmsc/smpp_smsc.h
+++ b/src/libmsc/smpp_smsc.h
@@ -92,6 +92,7 @@
 	uint32_t		sequence_nr;
 	uint32_t		gsm411_msg_ref;
 	uint8_t			gsm411_trans_id;
+	bool			is_report;
 	struct osmo_timer_list	response_timer;
 };