only perform oml-tei once

diff --git a/src/bs11_config.c b/src/bs11_config.c
index 7605d93..c016e18 100644
--- a/src/bs11_config.c
+++ b/src/bs11_config.c
@@ -441,6 +441,7 @@
 				command = NULL;
 			} else if (!strcmp(command, "oml-tei")) {
 				abis_nm_bs11_conn_oml_tei(g_bts, 0, 1, 0xff, TEI_OML);
+				command = NULL;
 			} else if (!strcmp(command, "restart")) {
 				abis_nm_bs11_restart(g_bts);
 				command = NULL;