diff --git a/class/cdc/usbh_cdc_ecm.c b/class/cdc/usbh_cdc_ecm.c
index e5ee046b..a388ad4a 100644
--- a/class/cdc/usbh_cdc_ecm.c
+++ b/class/cdc/usbh_cdc_ecm.c
@@ -188,7 +188,7 @@ get_mac:
     }
     USB_LOG_INFO("Set CDC ECM packet filter:%04x\r\n", CONFIG_USBHOST_CDC_ECM_PKT_FILTER);
 
-    memcpy(hport->config.intf[intf].devname, DEV_FORMAT, CONFIG_USBHOST_DEV_NAMELEN);
+    strncpy(hport->config.intf[intf].devname, DEV_FORMAT, CONFIG_USBHOST_DEV_NAMELEN);
 
     USB_LOG_INFO("Register CDC ECM Class:%s\r\n", hport->config.intf[intf].devname);
 
diff --git a/class/cdc/usbh_cdc_ncm.c b/class/cdc/usbh_cdc_ncm.c
index 1162bb38..24800126 100644
--- a/class/cdc/usbh_cdc_ncm.c
+++ b/class/cdc/usbh_cdc_ncm.c
@@ -206,7 +206,7 @@ get_mac:
         }
     }
 
-    memcpy(hport->config.intf[intf].devname, DEV_FORMAT, CONFIG_USBHOST_DEV_NAMELEN);
+    strncpy(hport->config.intf[intf].devname, DEV_FORMAT, CONFIG_USBHOST_DEV_NAMELEN);
 
     USB_LOG_INFO("Register CDC NCM Class:%s\r\n", hport->config.intf[intf].devname);
 
diff --git a/class/vendor/net/usbh_asix.c b/class/vendor/net/usbh_asix.c
index b7010153..9e7888a7 100644
--- a/class/vendor/net/usbh_asix.c
+++ b/class/vendor/net/usbh_asix.c
@@ -597,7 +597,7 @@ static int usbh_asix_connect(struct usbh_hubport *hport, uint8_t intf)
 
     USB_LOG_INFO("Init %s done\r\n", asix_class->name);
 
-    memcpy(hport->config.intf[intf].devname, DEV_FORMAT, CONFIG_USBHOST_DEV_NAMELEN);
+    strncpy(hport->config.intf[intf].devname, DEV_FORMAT, CONFIG_USBHOST_DEV_NAMELEN);
 
     USB_LOG_INFO("Register ASIX Class:%s\r\n", hport->config.intf[intf].devname);
     usbh_asix_run(asix_class);
diff --git a/class/vendor/net/usbh_rtl8152.c b/class/vendor/net/usbh_rtl8152.c
index 2cdadcc3..25d3e9a2 100644
--- a/class/vendor/net/usbh_rtl8152.c
+++ b/class/vendor/net/usbh_rtl8152.c
@@ -2080,7 +2080,7 @@ static int usbh_rtl8152_connect(struct usbh_hubport *hport, uint8_t intf)
         }
     }
 
-    memcpy(hport->config.intf[intf].devname, DEV_FORMAT, CONFIG_USBHOST_DEV_NAMELEN);
+    strncpy(hport->config.intf[intf].devname, DEV_FORMAT, CONFIG_USBHOST_DEV_NAMELEN);
 
     USB_LOG_INFO("Register RTL8152 Class:%s\r\n", hport->config.intf[intf].devname);
 
diff --git a/class/wireless/usbh_bluetooth.c b/class/wireless/usbh_bluetooth.c
index 4c223dbf..02da7adb 100644
--- a/class/wireless/usbh_bluetooth.c
+++ b/class/wireless/usbh_bluetooth.c
@@ -96,7 +96,7 @@ static int usbh_bluetooth_connect(struct usbh_hubport *hport, uint8_t intf)
     }
     USB_LOG_INFO("Bluetooth select altsetting 0\r\n");
 #endif
-    snprintf(hport->config.intf[intf].devname, CONFIG_USBHOST_DEV_NAMELEN, DEV_FORMAT);
+    strncpy(hport->config.intf[intf].devname, DEV_FORMAT, CONFIG_USBHOST_DEV_NAMELEN);
     USB_LOG_INFO("Register Bluetooth Class:%s\r\n", hport->config.intf[intf].devname);
     usbh_bluetooth_run(bluetooth_class);
     return ret;
diff --git a/class/wireless/usbh_rndis.c b/class/wireless/usbh_rndis.c
index fc93be8a..bdf3461c 100644
--- a/class/wireless/usbh_rndis.c
+++ b/class/wireless/usbh_rndis.c
@@ -387,7 +387,7 @@ static int usbh_rndis_connect(struct usbh_hubport *hport, uint8_t intf)
                  rndis_class->mac[4],
                  rndis_class->mac[5]);
 
-    memcpy(hport->config.intf[intf].devname, DEV_FORMAT, CONFIG_USBHOST_DEV_NAMELEN);
+    strncpy(hport->config.intf[intf].devname, DEV_FORMAT, CONFIG_USBHOST_DEV_NAMELEN);
 
     USB_LOG_INFO("Register RNDIS Class:%s\r\n", hport->config.intf[intf].devname);
     usbh_rndis_run(rndis_class);