diff --git a/src/spectator/runner.cr b/src/spectator/runner.cr
index 1c1c5d8..d5c50f9 100644
--- a/src/spectator/runner.cr
+++ b/src/spectator/runner.cr
@@ -25,7 +25,8 @@ module Spectator
 
       # Generate a report and pass it along to the formatter.
       remaining = @suite.size - results.size
-      report = Report.new(results, elapsed, remaining, @config.fail_blank?, @config.random_seed?)
+      seed = (@config.random_seed? if @config.randomize?)
+      report = Report.new(results, elapsed, remaining, @config.fail_blank?, seed)
       @config.each_formatter(&.end_suite(report, profile(report)))
 
       !report.failed?