diff --git a/components/bt/esp_ble_mesh/mesh_common/mesh_buf.c b/components/bt/esp_ble_mesh/mesh_common/mesh_buf.c
index 356536e63..01b6300e1 100644
--- a/components/bt/esp_ble_mesh/mesh_common/mesh_buf.c
+++ b/components/bt/esp_ble_mesh/mesh_common/mesh_buf.c
@@ -72,16 +72,14 @@ void net_buf_simple_add_le16(struct net_buf_simple *buf, u16_t val)
 {
     NET_BUF_SIMPLE_DBG("buf %p val %u", buf, val);
 
-    val = sys_cpu_to_le16(val);
-    memcpy(net_buf_simple_add(buf, sizeof(val)), &val, sizeof(val));
+    sys_put_le16(val, net_buf_simple_add(buf, sizeof(val)));
 }
 
 void net_buf_simple_add_be16(struct net_buf_simple *buf, u16_t val)
 {
     NET_BUF_SIMPLE_DBG("buf %p val %u", buf, val);
 
-    val = sys_cpu_to_be16(val);
-    memcpy(net_buf_simple_add(buf, sizeof(val)), &val, sizeof(val));
+    sys_put_be16(val, net_buf_simple_add(buf, sizeof(val)));
 }
 
 void net_buf_simple_add_le24(struct net_buf_simple *buf, u32_t val)
@@ -102,16 +100,14 @@ void net_buf_simple_add_le32(struct net_buf_simple *buf, u32_t val)
 {
     NET_BUF_SIMPLE_DBG("buf %p val %u", buf, val);
 
-    val = sys_cpu_to_le32(val);
-    memcpy(net_buf_simple_add(buf, sizeof(val)), &val, sizeof(val));
+    sys_put_le32(val, net_buf_simple_add(buf, sizeof(val)));
 }
 
 void net_buf_simple_add_be32(struct net_buf_simple *buf, u32_t val)
 {
     NET_BUF_SIMPLE_DBG("buf %p val %u", buf, val);
 
-    val = sys_cpu_to_be32(val);
-    memcpy(net_buf_simple_add(buf, sizeof(val)), &val, sizeof(val));
+    sys_put_be32(val, net_buf_simple_add(buf, sizeof(val)));
 }
 
 void net_buf_simple_add_le48(struct net_buf_simple *buf, u64_t val)
@@ -157,16 +153,14 @@ void net_buf_simple_push_le16(struct net_buf_simple *buf, u16_t val)
 {
     NET_BUF_SIMPLE_DBG("buf %p val %u", buf, val);
 
-    val = sys_cpu_to_le16(val);
-    memcpy(net_buf_simple_push(buf, sizeof(val)), &val, sizeof(val));
+    sys_put_le16(val, net_buf_simple_push(buf, sizeof(val)));
 }
 
 void net_buf_simple_push_be16(struct net_buf_simple *buf, u16_t val)
 {
     NET_BUF_SIMPLE_DBG("buf %p val %u", buf, val);
 
-    val = sys_cpu_to_be16(val);
-    memcpy(net_buf_simple_push(buf, sizeof(val)), &val, sizeof(val));
+    sys_put_be16(val, net_buf_simple_push(buf, sizeof(val)));
 }
 
 void net_buf_simple_push_u8(struct net_buf_simple *buf, u8_t val)