diff --git a/class/hid/usbh_hid.c b/class/hid/usbh_hid.c
index 5c400c7b..c4400cac 100644
--- a/class/hid/usbh_hid.c
+++ b/class/hid/usbh_hid.c
@@ -106,7 +106,7 @@ int usbh_hid_get_idle(struct usbh_hid *hid_class, uint8_t *buffer)
     if (ret < 8) {
         return ret;
     }
-    memcpy(buffer, g_hid_buf[hid_class->minor], MIN(ret - 8, 1));
+    memcpy(buffer, g_hid_buf[hid_class->minor], MIN((uint32_t)ret - 8, 1));
     return ret;
 }
 
@@ -148,7 +148,7 @@ int usbh_hid_get_protocol(struct usbh_hid *hid_class, uint8_t *protocol)
     if (ret < 8) {
         return ret;
     }
-    memcpy(protocol, g_hid_buf[hid_class->minor], MIN(ret - 8, 1));
+    memcpy(protocol, g_hid_buf[hid_class->minor], MIN((uint32_t)ret - 8, 1));
     return ret;
 }
 
@@ -190,7 +190,7 @@ int usbh_hid_get_report(struct usbh_hid *hid_class, uint8_t report_type, uint8_t
     if (ret < 8) {
         return ret;
     }
-    memcpy(buffer, g_hid_buf[hid_class->minor], MIN(ret - 8, buflen));
+    memcpy(buffer, g_hid_buf[hid_class->minor], MIN((uint32_t)ret - 8, buflen));
     return ret;
 }