diff --git a/os_dep/linux/ioctl_cfg80211.c b/os_dep/linux/ioctl_cfg80211.c
index fab891e..65c8c65 100644
--- a/os_dep/linux/ioctl_cfg80211.c
+++ b/os_dep/linux/ioctl_cfg80211.c
@@ -4655,6 +4655,10 @@ static int rtw_cfg80211_add_monitor_if(_adapter *padapter, char *name, struct ne
 		goto out;
 	}
 
+	mon_ndev->min_mtu = WLAN_MIN_ETHFRM_LEN;
+	mon_ndev->mtu = WLAN_DATA_MAXLEN;
+	mon_ndev->max_mtu = WLAN_DATA_MAXLEN;
+
 	mon_ndev->type = ARPHRD_IEEE80211_RADIOTAP;
 	strncpy(mon_ndev->name, name, IFNAMSIZ);
 	mon_ndev->name[IFNAMSIZ - 1] = 0;
diff --git a/os_dep/linux/os_intfs.c b/os_dep/linux/os_intfs.c
index 98e5863..ae8df8e 100644
--- a/os_dep/linux/os_intfs.c
+++ b/os_dep/linux/os_intfs.c
@@ -1592,6 +1592,10 @@ struct net_device *rtw_init_netdev(_adapter *old_padapter)
 	if (!pnetdev)
 		return NULL;
 
+	pnetdev->min_mtu = WLAN_MIN_ETHFRM_LEN;
+	pnetdev->mtu = WLAN_DATA_MAXLEN;
+	pnetdev->max_mtu = WLAN_DATA_MAXLEN;
+
 	padapter = rtw_netdev_priv(pnetdev);
 	padapter->pnetdev = pnetdev;
 
diff --git a/os_dep/osdep_service.c b/os_dep/osdep_service.c
index 35013ed..7612e20 100644
--- a/os_dep/osdep_service.c
+++ b/os_dep/osdep_service.c
@@ -13,7 +13,6 @@
  *
  *****************************************************************************/
 
-
 #define _OSDEP_SERVICE_C_
 
 #include <drv_types.h>
@@ -27,7 +26,6 @@ atomic_t _malloc_size = ATOMIC_INIT(0);
 #endif
 #endif /* DBG_MEMORY_LEAK */
 
-
 #if defined(PLATFORM_LINUX)
 /*
 * Translate the OS dependent @param error_code to OS independent RTW_STATUS_CODE
@@ -2390,6 +2388,11 @@ struct net_device *rtw_alloc_etherdev_with_old_priv(int sizeof_priv, void *old_p
 	if (!pnetdev)
 		goto RETURN;
 
+
+	pnetdev->min_mtu = WLAN_MIN_ETHFRM_LEN;
+	pnetdev->mtu = WLAN_MAX_ETHFRM_LEN;
+	pnetdev->max_mtu = WLAN_DATA_MAXLEN;
+
 	pnpi = netdev_priv(pnetdev);
 	pnpi->priv = old_priv;
 	pnpi->sizeof_priv = sizeof_priv;
@@ -2411,6 +2414,10 @@ struct net_device *rtw_alloc_etherdev(int sizeof_priv)
 	if (!pnetdev)
 		goto RETURN;
 
+	pnetdev->min_mtu = WLAN_MIN_ETHFRM_LEN;
+	pnetdev->mtu = WLAN_MAX_ETHFRM_LEN;
+	pnetdev->max_mtu = WLAN_DATA_MAXLEN;
+
 	pnpi = netdev_priv(pnetdev);
 
 	pnpi->priv = rtw_zvmalloc(sizeof_priv);