diff --git a/lib/vtls/axtls.c b/lib/vtls/axtls.c
index 1e511a2c72360e897ad087724f04e79a62d7beed..bcfe62b4dc85d519cb2b130379edc867bd19c95f 100644
--- a/lib/vtls/axtls.c
+++ b/lib/vtls/axtls.c
@@ -671,7 +671,7 @@ int Curl_axtls_random(struct SessionHandle *data,
      * race condition is that some global resources will leak. */
     RNG_initialize();
   }
-  get_random(length, entropy);
+  get_random((int)length, entropy);
   return 0;
 }