diff --git a/docs/spectest-progress.csv b/docs/spectest-progress.csv
index 844151e5314..0fa5e93e1ce 100644
--- a/docs/spectest-progress.csv
+++ b/docs/spectest-progress.csv
@@ -320,3 +320,4 @@
 "2009-04-05 00:00",7dc65fd,8436,0,340,1960,10736,15579,349
 "2009-04-06 00:00",078012a,8436,0,340,1960,10736,15579,349
 "2009-04-07 00:00",8f4dc52,8436,0,340,1960,10736,15579,349
+"2009-04-08 00:00",a2728b4,8444,0,342,1960,10746,15589,349
diff --git a/src/builtins/any-list.pir b/src/builtins/any-list.pir
index 279e4c66c6f..e30cefaf9df 100644
--- a/src/builtins/any-list.pir
+++ b/src/builtins/any-list.pir
@@ -71,7 +71,7 @@ the size of that file down and to emphasize their generic,
     .param string sep          :optional
     .param int has_sep         :opt_flag
     if has_sep goto have_sep
-    sep = ' '
+    sep = ''
   have_sep:
     $P0 = self.'list'()
     $P0.'!flatten'()
diff --git a/t/spectest.data b/t/spectest.data
index f25ed2514ce..6ef508ede1f 100644
--- a/t/spectest.data
+++ b/t/spectest.data
@@ -223,6 +223,7 @@ S06-signature/slurpy-params.t
 S06-signature/slurpy-placeholders.t
 S06-signature/sub-ref.t
 S06-signature/type-capture.t
+S06-signature/types.t
 S06-traits/is-copy.t
 S06-traits/is-rw.t
 S06-traits/misc.t