diff --git a/tests/testthat/test-plumber.R b/tests/testthat/test-plumber.R
index f87a71ae..3543889c 100644
--- a/tests/testthat/test-plumber.R
+++ b/tests/testthat/test-plumber.R
@@ -66,12 +66,7 @@ test_that("plumb gives a good error when passing in a dir instead of a file", {
   # brittle test. Fails on r-devel-windows-x86_64-gcc10-UCRT
   skip_on_cran()
 
-  if (isWindows()) {
-    # File paths are hard to work with and are inconsistent
-    skip_on_os("windows")
-  }
-
-  expect_error(plumb(test_path("files/")), "Expecting a file but found a directory: 'files/'")
+  expect_error(plumb(test_path("files/")), "Expecting a file but found a directory: 'files")
 })
 
 test_that("plumb accepts a directory with a `plumber.R` file", {