diff --git a/src/input/hsl.c b/src/input/hsl.c
index 7579290..d5010d1 100644
--- a/src/input/hsl.c
+++ b/src/input/hsl.c
@@ -220,7 +220,6 @@
 	struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1];
 	struct e1inp_sign_link *sign_link;
 	struct msgb *msg;
-	uint8_t proto;
 	int ret;
 
 	bfd->when &= ~BSC_FD_WRITE;
@@ -234,7 +233,6 @@
 
 	switch (sign_link->type) {
 	case E1INP_SIGN_OML:
-		proto = IPAC_PROTO_OML;
 #ifdef HSL_SR_1_0
 		/* HSL uses 0x81 for FOM for some reason */
 		if (msg->data[0] == ABIS_OM_MDISC_FOM)
@@ -242,7 +240,6 @@
 #endif
 		break;
 	case E1INP_SIGN_RSL:
-		proto = IPAC_PROTO_RSL;
 		break;
 	default:
 		msgb_free(msg);