diff --git a/include/osmocom/gsm/gsup.h b/include/osmocom/gsm/gsup.h
index 6e7fcf0..6c23297 100644
--- a/include/osmocom/gsm/gsup.h
+++ b/include/osmocom/gsm/gsup.h
@@ -71,7 +71,7 @@
 	OSMO_GSUP_FREEZE_PTMSI_IE		= 0x07,
 	OSMO_GSUP_MSISDN_IE			= 0x08,
 	OSMO_GSUP_HLR_NUMBER_IE			= 0x09,
-	OSMO_GSUP_MESSAGE_CLASS_IE			= 0x0a,
+	OSMO_GSUP_MESSAGE_CLASS_IE		= 0x0a,
 	OSMO_GSUP_PDP_CONTEXT_ID_IE		= 0x10,
 	OSMO_GSUP_PDP_TYPE_IE			= 0x11,
 	OSMO_GSUP_ACCESS_POINT_NAME_IE		= 0x12,