diff --git a/subsys/bluetooth/host/adv.c b/subsys/bluetooth/host/adv.c
index 8420daea603ff9..2191effefbae1b 100644
--- a/subsys/bluetooth/host/adv.c
+++ b/subsys/bluetooth/host/adv.c
@@ -662,7 +662,7 @@ static int hci_set_ad_ext(struct bt_le_ext_adv *adv, uint16_t hci_op,
 	}
 
 	if (total_len_bytes > bt_dev.le.max_adv_data_len) {
-		LOG_WRN("adv or scan rsp data too large (%d > max %d)", total_len_bytes,
+		LOG_WRN("adv or scan rsp data too large (%zu > max %u)", total_len_bytes,
 			bt_dev.le.max_adv_data_len);
 		return -EDOM;
 	}
diff --git a/subsys/bluetooth/host/buf.c b/subsys/bluetooth/host/buf.c
index 2e639488481712..2ce2477ff05e4a 100644
--- a/subsys/bluetooth/host/buf.c
+++ b/subsys/bluetooth/host/buf.c
@@ -158,7 +158,7 @@ struct net_buf *bt_buf_make_view(struct net_buf *view,
 
 	__ASSERT_NO_MSG(!bt_buf_has_view(parent));
 
-	LOG_DBG("make-view %p viewsize %u meta %p", view, len, meta);
+	LOG_DBG("make-view %p viewsize %zu meta %p", view, len, meta);
 
 	net_buf_simple_clone(&parent->b, &view->b);
 	view->size = net_buf_headroom(parent) + len;
diff --git a/subsys/bluetooth/host/conn.c b/subsys/bluetooth/host/conn.c
index 862f196618bd7d..bd4d71f861455f 100644
--- a/subsys/bluetooth/host/conn.c
+++ b/subsys/bluetooth/host/conn.c
@@ -155,7 +155,7 @@ static struct net_buf *get_data_frag(struct net_buf *outside, size_t winsize)
 	window = bt_buf_make_view(window, outside,
 				  winsize, &get_frag_md(window)->view_meta);
 
-	LOG_DBG("get-acl-frag: outside %p window %p size %d", outside, window, winsize);
+	LOG_DBG("get-acl-frag: outside %p window %p size %zu", outside, window, winsize);
 
 	return window;
 }
@@ -651,7 +651,7 @@ static int send_buf(struct bt_conn *conn, struct net_buf *buf,
 		return -EIO;
 	}
 
-	LOG_DBG("conn %p buf %p len %u buf->len %u cb %p ud %p",
+	LOG_DBG("conn %p buf %p len %zu buf->len %u cb %p ud %p",
 		conn, buf, len, buf->len, cb, ud);
 
 	/* Acquire the right to send 1 packet to the controller */
diff --git a/subsys/bluetooth/host/l2cap.c b/subsys/bluetooth/host/l2cap.c
index 1b25f838fa3c49..b6ca2f3ea000c3 100644
--- a/subsys/bluetooth/host/l2cap.c
+++ b/subsys/bluetooth/host/l2cap.c
@@ -933,7 +933,7 @@ struct net_buf *l2cap_data_pull(struct bt_conn *conn,
 		struct bt_l2cap_hdr *hdr;
 		uint16_t pdu_len = get_pdu_len(lechan, pdu);
 
-		LOG_DBG("Adding L2CAP PDU header: buf %p chan %p len %zu / %zu",
+		LOG_DBG("Adding L2CAP PDU header: buf %p chan %p len %u / %u",
 			pdu, lechan, pdu_len, pdu->len);
 
 		LOG_HEXDUMP_DBG(pdu->data, pdu->len, "PDU payload");