diff --git a/openbsc/src/libbsc/bsc_vty.c b/openbsc/src/libbsc/bsc_vty.c
index 8bfbb24..9129059 100644
--- a/openbsc/src/libbsc/bsc_vty.c
+++ b/openbsc/src/libbsc/bsc_vty.c
@@ -1464,7 +1464,7 @@
       cfg_net_T##number##_cmd,					\
       "timer t" #number  " <0-65535>",				\
       "Configure GSM Timers\n"					\
-      doc "Timer Value\n")					\
+      doc "Timer Value in seconds\n")				\
 {								\
 	struct gsm_network *gsmnet = gsmnet_from_vty(vty);	\
 	int value = atoi(argv[0]);				\