diff --git a/assembly-script/wamr_app_lib/request.ts b/assembly-script/wamr_app_lib/request.ts
index efe31386..db72ddd1 100644
--- a/assembly-script/wamr_app_lib/request.ts
+++ b/assembly-script/wamr_app_lib/request.ts
@@ -385,7 +385,7 @@ export function put(url: string, payload: ArrayBuffer, payload_len: number, tag:
 
 export function del(url: string, tag: string,
                     cb: (resp: wamr_response) => void): void {
-    var req = new wamr_request(g_mid++, url, COAP_PUT, 0, new ArrayBuffer(0), 0);
+    var req = new wamr_request(g_mid++, url, COAP_DELETE, 0, new ArrayBuffer(0), 0);
 
     do_request(req, cb);
 }
diff --git a/core/iwasm/libraries/lib-socket/src/wasi/wasi_socket_ext.c b/core/iwasm/libraries/lib-socket/src/wasi/wasi_socket_ext.c
index bddebabd..7d371e06 100644
--- a/core/iwasm/libraries/lib-socket/src/wasi/wasi_socket_ext.c
+++ b/core/iwasm/libraries/lib-socket/src/wasi/wasi_socket_ext.c
@@ -94,7 +94,7 @@ wasi_addr_to_sockaddr(const __wasi_addr_t *wasi_addr,
             uint32_t s_addr;
 
             memset(&sock_addr_in, 0, sizeof(sockaddr_in));
-            
+
             s_addr = (wasi_addr->addr.ip4.addr.n0 << 24)
                      | (wasi_addr->addr.ip4.addr.n1 << 16)
                      | (wasi_addr->addr.ip4.addr.n2 << 8)
@@ -111,7 +111,7 @@ wasi_addr_to_sockaddr(const __wasi_addr_t *wasi_addr,
         case IPv6:
         {
             struct sockaddr_in6 sock_addr_in6;
-            
+
             memset(&sock_addr_in6, 0, sizeof(sockaddr_in6));
 
             uint16_t *addr_buf = (uint16_t *)sock_addr_in6.sin6_addr.s6_addr;