diff --git a/test/spec/metadata-spec.janet b/test/spec/metadata-spec.janet
index b3df3b5..e92b3c0 100644
--- a/test/spec/metadata-spec.janet
+++ b/test/spec/metadata-spec.janet
@@ -8,7 +8,8 @@
   ["with-meta on map"     "{:doc \"x\"}" "(meta (with-meta {:k 1} {:doc \"x\"}))"]
   ["vary-meta"            "{:a 2}"     "(meta (vary-meta (with-meta [1] {:a 1}) update :a inc))"]
   ["meta reader ^"        "{:tag :int}" "(meta ^{:tag :int} [1 2])"]
-  ["with-meta on fn ok"   "true"       "(fn? (with-meta inc {:a 1}))"])
+  ["with-meta on fn ok"   "true"       "(fn? (with-meta inc {:a 1}))"]
+  ["with-meta nil clears" "nil"        "(meta (with-meta [1 2 3] nil))"])
 
 (defspec "metadata / type hints"
   # ^Type / ^:kw / ^"str" on a symbol attach as metadata and are otherwise inert:
diff --git a/test/spec/sequences-spec.janet b/test/spec/sequences-spec.janet
index 8f78525..1e7a065 100644
--- a/test/spec/sequences-spec.janet
+++ b/test/spec/sequences-spec.janet
@@ -43,6 +43,8 @@
   ["map"                    "[2 3 4]"      "(map inc [1 2 3])"]
   ["map two colls"          "[5 7 9]"      "(map + [1 2 3] [4 5 6])"]
   ["map stops at shortest"  "[5 7]"        "(map + [1 2] [4 5 6])"]
+  # nil elements are values, not end-of-seq: multi-coll map must not truncate.
+  ["map keeps nil elements" "[[1 :a] [nil :b] [3 nil]]" "(map vector [1 nil 3] [:a :b nil])"]
   ["map-indexed"            "[[0 :a] [1 :b]]" "(map-indexed vector [:a :b])"]
   ["mapv"                   "[2 3 4]"      "(mapv inc [1 2 3])"]
   ["filter"                 "[2 4]"        "(filter even? [1 2 3 4])"]