diff --git a/common/usb_memcpy.h b/common/usb_memcpy.h
index 3780bd9e..ed028e64 100644
--- a/common/usb_memcpy.h
+++ b/common/usb_memcpy.h
@@ -89,6 +89,8 @@ static inline void *usb_memcpy(void *s1, const void *s2, size_t n)
     return s1;
 }
 
+#ifndef CONFIG_USB_MEMCPY_DISABLE
 #define memcpy usb_memcpy
+#endif
 
 #endif