diff --git a/lib/list_sort.c b/lib/list_sort.c
index d7325c6b..1183fa7 100644
--- a/lib/list_sort.c
+++ b/lib/list_sort.c
@@ -229,7 +229,7 @@
 			goto exit;
 		}
 		 /* force some equivalencies */
-		el->value = random32() % (TEST_LIST_LEN/3);
+		el->value = prandom_u32() % (TEST_LIST_LEN / 3);
 		el->serial = i;
 		el->poison1 = TEST_POISON1;
 		el->poison2 = TEST_POISON2;