diff --git a/unison-cli/src/Unison/Codebase/Editor/HandleInput/Update2.hs b/unison-cli/src/Unison/Codebase/Editor/HandleInput/Update2.hs
index c28d820c12..82c5af515e 100644
--- a/unison-cli/src/Unison/Codebase/Editor/HandleInput/Update2.hs
+++ b/unison-cli/src/Unison/Codebase/Editor/HandleInput/Update2.hs
@@ -381,9 +381,9 @@ findCtorNames names forwardCtorNames ctorCount n =
       insertShortest m _ = m
       m = foldl' insertShortest mempty (Foldable.toList center)
       ctorCountGuess = fromMaybe (Map.size m) ctorCount
-   in if Map.size m == ctorCountGuess && all (isJust . flip Map.lookup m) [0 .. fromIntegral ctorCountGuess - 1]
+   in if Map.size m == ctorCountGuess && all (isJust . flip Map.lookup m . fromIntegral) [0 .. ctorCountGuess - 1]
         then Right $ Map.elems m
-        else Left $ Output.UpdateIncompleteConstructorSet n m ctorCountGuess
+        else Left $ Output.UpdateIncompleteConstructorSet n m ctorCount
 
 -- Used by `findCtorNames` to filter `forwardCtorNames` to a narrow range which will be searched linearly.
 -- >>> incrementLastSegmentChar $ ForwardName.fromName $ Name.unsafeFromText "foo.bar.quux"
diff --git a/unison-cli/src/Unison/Codebase/Editor/Output.hs b/unison-cli/src/Unison/Codebase/Editor/Output.hs
index 5f1e485468..efceacd9aa 100644
--- a/unison-cli/src/Unison/Codebase/Editor/Output.hs
+++ b/unison-cli/src/Unison/Codebase/Editor/Output.hs
@@ -390,7 +390,7 @@ data Output
   | UpdateStartTypechecking
   | UpdateTypecheckingFailure
   | UpdateTypecheckingSuccess
-  | UpdateIncompleteConstructorSet Name (Map ConstructorId Name) Int
+  | UpdateIncompleteConstructorSet Name (Map ConstructorId Name) (Maybe Int)
   | UpgradeFailure !NameSegment !NameSegment
   | UpgradeSuccess !NameSegment !NameSegment
 
diff --git a/unison-cli/src/Unison/CommandLine/OutputMessages.hs b/unison-cli/src/Unison/CommandLine/OutputMessages.hs
index dd4e07651c..effcf4da28 100644
--- a/unison-cli/src/Unison/CommandLine/OutputMessages.hs
+++ b/unison-cli/src/Unison/CommandLine/OutputMessages.hs
@@ -2193,7 +2193,7 @@ notifyUser dir = \case
       P.lines
         [ P.wrap $
             "I couldn't complete the update because I couldn't find"
-              <> fromString (show expectedCount)
+              <> fromString (maybe "" show expectedCount)
               <> "constructor(s) for"
               <> prettyName name
               <> "where I expected to."
diff --git a/unison-src/transcripts/update-type-add-new-record.md b/unison-src/transcripts/update-type-add-new-record.md
new file mode 100644
index 0000000000..0d311ec1e2
--- /dev/null
+++ b/unison-src/transcripts/update-type-add-new-record.md
@@ -0,0 +1,12 @@
+```ucm:hide
+.lib> builtins.merge
+```
+
+```unison
+unique type Foo = { bar : Nat }
+```
+
+```ucm
+.> update
+.> view Foo
+```
diff --git a/unison-src/transcripts/update-type-add-new-record.output.md b/unison-src/transcripts/update-type-add-new-record.output.md
new file mode 100644
index 0000000000..99980ea0cb
--- /dev/null
+++ b/unison-src/transcripts/update-type-add-new-record.output.md
@@ -0,0 +1,35 @@
+```unison
+unique type Foo = { bar : Nat }
+```
+
+```ucm
+
+  I found and typechecked these definitions in scratch.u. If you
+  do an `add` or `update`, here's how your codebase would
+  change:
+  
+    ⍟ These new definitions are ok to `add`:
+    
+      unique type Foo
+      Foo.bar        : Foo -> Nat
+      Foo.bar.modify : (Nat ->{g} Nat) -> Foo ->{g} Foo
+      Foo.bar.set    : Nat -> Foo -> Foo
+
+```
+```ucm
+.> update
+
+  Okay, I'm searching the branch for code that needs to be
+  updated...
+
+  That's done. Now I'm making sure everything typechecks...
+
+  Everything typechecks, so I'm saving the results...
+
+  Done.
+
+.> view Foo
+
+  unique type Foo = { bar : Nat }
+
+```