diff --git a/library/aesni.h b/library/aesni.h
index 82947e4..fa1f369 100644
--- a/library/aesni.h
+++ b/library/aesni.h
@@ -88,7 +88,11 @@
  *
  * \return         1 if CPU has support for the feature, 0 otherwise
  */
+#if !defined(MBEDTLS_AES_HAS_NO_BUILTIN)
 int mbedtls_aesni_has_support(unsigned int what);
+#else
+#define /* no-check-names */ mbedtls_aesni_has_support(what) 1
+#endif
 
 /**
  * \brief          Internal AES-NI AES-ECB block encryption and decryption