diff --git a/src/parz/combinators.gleam b/src/parz/combinators.gleam
index 19e45b5..b6556a8 100644
--- a/src/parz/combinators.gleam
+++ b/src/parz/combinators.gleam
@@ -150,7 +150,7 @@ pub fn map(parser: Parser(a), transform) {
   fn(input) {
     case parser(input) {
       Error(err) -> Error(err)
-      Ok(ok) -> Ok(#(transform(ok.matched), ok.remaining))
+      Ok(ok) -> Ok(ParserState(transform(ok.matched), ok.remaining))
     }
   }
 }
diff --git a/test/combinators_test.gleam b/test/combinators_test.gleam
index 8ef1421..c3ddb3d 100644
--- a/test/combinators_test.gleam
+++ b/test/combinators_test.gleam
@@ -195,11 +195,11 @@ pub fn map_test() {
 
   run(parser, "[hello]")
   |> should.be_ok
-  |> should.equal(#(Content("[hello]"), ""))
+  |> should.equal(ParserState(Content("[hello]"), ""))
 
   run(parser, "[hello]x")
   |> should.be_ok
-  |> should.equal(#(Content("[hello]"), "x"))
+  |> should.equal(ParserState(Content("[hello]"), "x"))
 
   run(parser, "[hellox")
   |> should.be_error