diff --git a/dhcp_tools/uv_rawsocket.c b/dhcp_tools/uv_rawsocket.c
index 22554c6..4d66545 100644
--- a/dhcp_tools/uv_rawsocket.c
+++ b/dhcp_tools/uv_rawsocket.c
@@ -311,11 +311,7 @@ int dhcp_tools_init_network(const char *pNicName) {
         return ERR_SUCCESS;
     }
 
-#if VLAN_SUPPORT
     init_filter("vlan or (udp and dst port 68)");
-#else
-    init_filter("udp and dst port 68");
-#endif
 
     ret = create_udp_raw_socket(g_pNicName);
     if (ret != ERR_SUCCESS) {
diff --git a/srcs/libs/include/network/vlan.h b/srcs/libs/include/network/vlan.h
index 891c888..a966410 100644
--- a/srcs/libs/include/network/vlan.h
+++ b/srcs/libs/include/network/vlan.h
@@ -13,8 +13,6 @@ extern "C" {
 #include <linux/if_ether.h>
 #include "common.h"
 
-#define VLAN_SUPPORT (1)
-
 #pragma pack(push)
 #pragma pack(1)
 
@@ -27,19 +25,15 @@ typedef enum {
 } VLAN_TYPE;
 
 typedef struct vlan_hdr {
-#if VLAN_SUPPORT
     U16 id;
     U16 type;
-#endif
 } VLAN_HDR, *PVLAN_HDR;
 
 typedef struct vlan_hdr2 {
-#if VLAN_SUPPORT
     U16 id1;
     U16 h_type;
     U16 id2;
     U16 type;
-#endif
 } VLAN_HDR2, *PVLAN_HDR2;
 
 VLAN_TYPE get_package_vlan_type(void *pBuf);