diff --git a/tests/testthat/test-parse-block.R b/tests/testthat/test-parse-block.R
index d7c914f2..150dbd8b 100644
--- a/tests/testthat/test-parse-block.R
+++ b/tests/testthat/test-parse-block.R
@@ -149,7 +149,7 @@ test_that("@json parameters work", {
   expect_block_fn("#' @serializer json list   (      auto_unbox          =       TRUE    ,      na      =      'string'   )             ", serializer_json(auto_unbox = TRUE, na = 'string'))
 
 
-  expect_block_error("#' @serializer json list(na = 'string'", "unexpected end of input")
+  expect_block_error("#' @serializer json list(na = 'string'")
   expect_block_error("#' @json(na = 'string'", "must be surrounded by parentheses")
   expect_block_error("#' @json (na = 'string'", "must be surrounded by parentheses")
   expect_block_error("#' @json ( na = 'string'", "must be surrounded by parentheses")