diff --git a/tests/testthat/test-backend-teradata.R b/tests/testthat/test-backend-teradata.R
index c1883097e..6595979b9 100644
--- a/tests/testthat/test-backend-teradata.R
+++ b/tests/testthat/test-backend-teradata.R
@@ -4,8 +4,9 @@ test_that("custom scalar translated correctly", {
   expect_equal(test_translate_sql(x != y),          sql("`x` <> `y`"))
   expect_equal(test_translate_sql(as.numeric(x)),   sql("CAST(`x` AS DECIMAL(12, 9))"))
   expect_equal(test_translate_sql(as.numeric(x, 8)),   sql("CAST(`x` AS DECIMAL(12, 8))"))
-  expect_equal(test_translate_sql(as.double(x)),    sql("CAST(`x` AS NUMERIC)"))
-  expect_equal(test_translate_sql(as.character(x)), sql("CAST(`x` AS VARCHAR(MAX))"))
+  expect_equal(test_translate_sql(as.double(x)),    sql("CAST(`x` AS FLOAT)"))
+  expect_equal(test_translate_sql(as.character(x)), sql("CAST(`x` AS VARCHAR(255))"))
+  expect_equal(test_translate_sql(as.character(x, 12)), sql("CAST(`x` AS VARCHAR(12))"))
   expect_equal(test_translate_sql(log(x)),          sql("LN(`x`)"))
   expect_equal(test_translate_sql(cot(x)),          sql("1 / TAN(`x`)"))
   expect_equal(test_translate_sql(nchar(x)),        sql("CHARACTER_LENGTH(`x`)"))