diff --git a/extra/furnace/sessions/sessions-tests.factor b/extra/furnace/sessions/sessions-tests.factor
index e959cae76a..a97ba091c0 100755
--- a/extra/furnace/sessions/sessions-tests.factor
+++ b/extra/furnace/sessions/sessions-tests.factor
@@ -65,7 +65,7 @@ M: foo call-responder*
 
     [
         [ ] [
-           empty-session
+            empty-session
                 123 >>id session set
         ] unit-test