diff --git a/test/jiffy_tests.erl b/test/jiffy_tests.erl
index 35465be..0997bc7 100644
--- a/test/jiffy_tests.erl
+++ b/test/jiffy_tests.erl
@@ -10,7 +10,7 @@
 proper_test_() ->
     PropErOpts = [
         {to_file, user},
-        {max_size, 30},
+        {max_size, 15},
         {numtests, 1000}
     ],
     {timeout, 3600, ?_assertEqual([], proper:module(jiffy_tests, PropErOpts))}.