\r
                bool USB_GetOSFeatureDescriptor(const uint16_t wValue, const uint8_t wIndex,\r
                                                void** const DescriptorAddress, uint16_t* const DescriptorSize)\r
-                                               ATTR_WARN_UNUSED_RESULT ATTR_WEAK ATTR_NON_NULL_PTR_ARG(3, 4);\r
+                                               ATTR_WARN_UNUSED_RESULT ATTR_WEAK ATTR_NON_NULL_PTR_ARG(3) ATTR_NON_NULL_PTR_ARG(4);\r
 \r
 #endif\r