diff --git a/tests/runtests.pl b/tests/runtests.pl
index da9caebfc2..e28fd56e50 100755
--- a/tests/runtests.pl
+++ b/tests/runtests.pl
@@ -57,8 +57,7 @@
 # given, this won't be a problem.
 
 use strict;
-# Promote all warnings to fatal
-use warnings FATAL => 'all';
+use warnings;
 use 5.006;
 use POSIX qw(strftime);