diff --git a/src/gsm/libosmogsm.map b/src/gsm/libosmogsm.map
index a903787..331c3f0 100644
--- a/src/gsm/libosmogsm.map
+++ b/src/gsm/libosmogsm.map
@@ -551,6 +551,7 @@
 
 osmo_imsi_str_valid;
 osmo_msisdn_str_valid;
+osmo_imei_str_valid;
 
 osmo_mncc_stringify;
 osmo_mncc_names;