diff --git a/include/osmocom/bsc/gsm_data.h b/include/osmocom/bsc/gsm_data.h
index 776fcfe..44fba86 100644
--- a/include/osmocom/bsc/gsm_data.h
+++ b/include/osmocom/bsc/gsm_data.h
@@ -201,6 +201,8 @@
 	BTS_CTR_PAGING_ALREADY,
 	BTS_CTR_PAGING_RESPONDED,
 	BTS_CTR_PAGING_EXPIRED,
+	BTS_CTR_CHAN_ACT_TOTAL,
+	BTS_CTR_CHAN_ACT_NACK,
 };
 
 static const struct rate_ctr_desc bts_ctr_description[] = {
@@ -220,6 +222,8 @@
 	[BTS_CTR_PAGING_ALREADY] = 		{"paging:already", "Paging attempts ignored as subsciber was already being paged."},
 	[BTS_CTR_PAGING_RESPONDED] = 		{"paging:responded", "Paging attempts with successful paging response."},
 	[BTS_CTR_PAGING_EXPIRED] = 		{"paging:expired", "Paging Request expired because of timeout T3113."},
+	[BTS_CTR_CHAN_ACT_TOTAL] =		{"chan_act:total", "Total number of Channel Activations."},
+	[BTS_CTR_CHAN_ACT_NACK] =		{"chan_act:nack", "Number of Channel Activations that the BTS NACKed"},
 };
 
 static const struct rate_ctr_group_desc bts_ctrg_desc = {