#include "curl_setup.h"
-/* NSS and OS/400 crypto library do not provide the MD4 hash algorithm, so
- * that we have a local implementation of it */
-#if defined(USE_NSS) || defined(USE_OS400CRYPTO)
+#if defined(USE_NSS) || defined(USE_OS400CRYPTO) || \
+ (defined(USE_MBEDTLS) && !defined(MBEDTLS_MD4_C))
void Curl_md4it(unsigned char *output, const unsigned char *input, size_t len);
-#endif /* defined(USE_NSS) || defined(USE_OS400CRYPTO) */
+#endif /* defined(USE_NSS) || defined(USE_OS400CRYPTO) ||
+ (defined(USE_MBEDTLS) && !defined(MBEDTLS_MD4_C)) */
#endif /* HEADER_CURL_MD4_H */