diff --git a/tests/suites/helpers.function b/tests/suites/helpers.function
index 1e09666..f6a3529 100644
--- a/tests/suites/helpers.function
+++ b/tests/suites/helpers.function
@@ -105,6 +105,7 @@
  */
 static int rnd_std_rand( void *rng_state, unsigned char *output, size_t len )
 {
+#if !defined(__OpenBSD__)
     size_t i;
 
     if( rng_state != NULL )
@@ -112,6 +113,12 @@
 
     for( i = 0; i < len; ++i )
         output[i] = rand();
+#else
+    if( rng_state != NULL )
+        rng_state = NULL;
+
+    arc4random_buf( output, len );
+#endif /* !OpenBSD */
 
     return( 0 );
 }