1 files changed, 1 insertions, 1 deletions
diff --git a/t/multi.t b/t/multi.t
index 362f1f7b4..f709f14ed 100644
--- a/t/multi.t
+++ b/t/multi.t
@@ -128,7 +128,7 @@ use Slic3r::Test;
     $config->set('fill_density', 0);
     $config->set('solid_infill_speed', 99);
     $config->set('top_solid_infill_speed', 99);
-    $config->set('cooling', 0);                 # for preventing speeds from being altered
+    $config->set('cooling', [ 0 ]);             # for preventing speeds from being altered
     $config->set('first_layer_speed', '100%');  # for preventing speeds from being altered
     
     my $test = sub {