diff --git a/test/test_acceptance.ml b/test/test_acceptance.ml
index b697342..de921cc 100644
--- a/test/test_acceptance.ml
+++ b/test/test_acceptance.ml
@@ -2998,7 +2998,12 @@ level "1"
       "programs/dyn-basic.flan" dyn_basic_out;
     outputs ~opt:"-O0" "dyn: an unannotated defn at two types, -O0"
       "programs/dyn-basic.flan" dyn_basic_out;
-    let dyn_vec_out = "4\n[1 2.5 three true]\n1 2.5 three true \n" in
+    (* The rendering is the typed printer's: a leading space after the open
+       bracket and strings quoted inside a collection but bare alone —
+       (println [\"a\"]) and (println \"a\") already disagree exactly this way,
+       so the dyn printer disagreeing would have been the bug. The stub this
+       expectation was first written against printed neither. *)
+    let dyn_vec_out = "4\n[ 1 2.5 \"three\" true]\n1 2.5 three true \n" in
     outputs "dyn: a heterogeneous vector"
       "programs/dyn-vec.flan" dyn_vec_out;
     outputs ~opt:"-O0" "dyn: a heterogeneous vector, -O0"
@@ -3022,7 +3027,7 @@ level "1"
       in
       if code <> 134
          || not (contains text want)
-         || not (contains text "required to be an i64")
+         || not (contains text "an int was wanted")
       then begin
         incr failures;
         Printf.printf