diff --git a/include/osmo-bts/oml.h b/include/osmo-bts/oml.h
index 484e210ba..0689bb058 100644
--- a/include/osmo-bts/oml.h
+++ b/include/osmo-bts/oml.h
@@ -32,7 +32,7 @@ struct gsm_abis_mo {
 	struct gsm_bts *bts;
 };
 
-int oml_init(struct gsm_abis_mo *mo);
+int oml_init(void);
 int down_oml(struct gsm_bts *bts, struct msgb *msg);
 
 struct msgb *oml_msgb_alloc(void);
diff --git a/src/common/abis.c b/src/common/abis.c
index 4c62e8f43..5b914c76b 100644
--- a/src/common/abis.c
+++ b/src/common/abis.c
@@ -259,7 +259,7 @@ void abis_init(struct gsm_bts *bts)
 {
 	g_bts = bts;
 
-	oml_init(&bts->mo);
+	oml_init();
 	libosmo_abis_init(tall_bts_ctx);
 
 	osmo_signal_register_handler(SS_L_INPUT, &inp_s_cbfn, bts);
diff --git a/src/common/oml.c b/src/common/oml.c
index 2a87b0315..e48f9435c 100644
--- a/src/common/oml.c
+++ b/src/common/oml.c
@@ -1544,7 +1544,7 @@ int down_oml(struct gsm_bts *bts, struct msgb *msg)
 	return ret;
 }
 
-int oml_init(struct gsm_abis_mo *mo)
+int oml_init()
 {
 	DEBUGP(DOML, "Initializing OML attribute definitions\n");
 	tlv_def_patch(&abis_nm_att_tlvdef_ipa_local, &abis_nm_att_tlvdef_ipa);