diff --git a/src/bts.cpp b/src/bts.cpp
index 95dde047..ee6b915a 100644
--- a/src/bts.cpp
+++ b/src/bts.cpp
@@ -856,7 +856,7 @@ int bts_rcv_rach(struct gprs_rlcmac_bts *bts, const struct rach_ind_params *rip)
 	struct chan_req_params chan_req = { 0 };
 	struct gprs_rlcmac_ul_tbf *tbf = NULL;
 	struct gprs_rlcmac_sba *sba;
-	uint8_t trx_no, ts_no;
+	uint8_t trx_no = 0, ts_no = 0; /* initialize to avoid uninitialized false warnings on some gcc versions (11.1.0) */
 	uint32_t sb_fn = 0;
 	uint8_t usf = 7;
 	uint8_t tsc = 0;
diff --git a/src/gprs_bssgp_pcu.c b/src/gprs_bssgp_pcu.c
index 0e8e1459..e2f6f519 100644
--- a/src/gprs_bssgp_pcu.c
+++ b/src/gprs_bssgp_pcu.c
@@ -1075,12 +1075,13 @@ static int ns_configure_nse(struct gprs_rlcmac_bts *bts,
 			    const uint16_t *nsvci,
 			    uint16_t valid)
 {
-	int i, rc;
+	unsigned int i;
+	int rc;
 	uint16_t binds = 0;
 	bool nsvcs = false;
 	struct gprs_ns2_vc *nsvc;
 	struct gprs_ns2_vc_bind *bind[PCU_IF_NUM_NSVC] = { };
-	char name[5];
+	char name[16];
 	bool sns_configured = false;
 
 	if (!valid)
@@ -1100,7 +1101,7 @@ static int ns_configure_nse(struct gprs_rlcmac_bts *bts,
 			continue;
 
 		if (!gprs_ns2_ip_bind_by_sockaddr(the_pcu->nsi, &local[i])) {
-			snprintf(name, sizeof(name), "pcu%d", i);
+			snprintf(name, sizeof(name), "pcu%u", i);
 			rc = gprs_ns2_ip_bind(the_pcu->nsi, name, &local[i], 0, &bind[i]);
 			if (rc < 0) {
 				LOGP(DBSSGP, LOGL_ERROR, "Failed to bind to %s\n", osmo_sockaddr_to_str(&local[i]));