diff --git a/modules/rhizo_base/files/bin/migrate-hlr.sh b/modules/rhizo_base/files/bin/migrate-hlr.sh
index d460f4d..f7eef46 100755
--- a/modules/rhizo_base/files/bin/migrate-hlr.sh
+++ b/modules/rhizo_base/files/bin/migrate-hlr.sh
@@ -29,6 +29,9 @@ if [ -f hlr.db ]; then
   rm hlr.db-wal hlr.db-shm 2> /dev/null
 fi
 
+echo "Clean invalid IMSIs from NITB db"
+echo 'DELETE FROM subscriber WHERE authorized=0 AND length(imsi)!=15;' | sqlite3 ./hlr.sqlite3
+
 echo "Importing NITB db form hlr.sqlite3 to hlr.db..."
 osmo-hlr-db-tool import-nitb-db hlr.sqlite3 -l hlr.db
 systemctl restart osmo-hlr