diff --git a/gen164/5/shax.c b/gen164/5/shax.c
index 0c4f0e306..02724cf8d 100644
--- a/gen164/5/shax.c
+++ b/gen164/5/shax.c
@@ -5,9 +5,11 @@
 #include "all.h"
 #include "../pit.h"
 
-#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
-
+#if defined(U2_OS_osx)
+#include <CommonCrypto/CommonDigest.h>
+#else
 #include <openssl/sha.h>
+#endif
 
 /* functions
 */
@@ -21,11 +23,19 @@
     u2_bytes(0, met_w, fat_y, a);
     {
       c3_y dig_y[32];
+#if defined(U2_OS_osx)
+      CC_SHA256_CTX ctx_h;
+
+      CC_SHA256_Init(&ctx_h);
+      CC_SHA256_Update(&ctx_h, fat_y, met_w);
+      CC_SHA256_Final(dig_y, &ctx_h);
+#else
       SHA256_CTX ctx_h;
 
       SHA256_Init(&ctx_h);
       SHA256_Update(&ctx_h, fat_y, met_w);
       SHA256_Final(dig_y, &ctx_h);
+#endif
       free(fat_y);
       return u2_rl_bytes(wir_r, 32, dig_y);
     }
@@ -42,11 +52,19 @@
     u2_bytes(0, a, fat_y, b);
     {
       c3_y dig_y[64];
+#if defined(U2_OS_osx)
+      CC_SHA512_CTX ctx_h;
+
+      CC_SHA512_Init(&ctx_h);
+      CC_SHA512_Update(&ctx_h, fat_y, a);
+      CC_SHA512_Final(dig_y, &ctx_h);
+#else
       SHA512_CTX ctx_h;
 
       SHA512_Init(&ctx_h);
       SHA512_Update(&ctx_h, fat_y, a);
       SHA512_Final(dig_y, &ctx_h);
+#endif
       free(fat_y);
       return u2_rl_bytes(wir_r, 64, dig_y);
     }