diff --git a/include/osmocom/gsm/bts_features.h b/include/osmocom/gsm/bts_features.h
index e84f95b..7ead020 100644
--- a/include/osmocom/gsm/bts_features.h
+++ b/include/osmocom/gsm/bts_features.h
@@ -23,6 +23,7 @@
 	BTS_FEAT_SPEECH_F_EFR,
 	BTS_FEAT_SPEECH_F_AMR,
 	BTS_FEAT_SPEECH_H_AMR,
+	BTS_FEAT_ETWS_PN,
 	_NUM_BTS_FEAT
 };