diff --git a/dwds/test/fixtures/project.dart b/dwds/test/fixtures/project.dart
index 46bd9193b..9dc8e3def 100644
--- a/dwds/test/fixtures/project.dart
+++ b/dwds/test/fixtures/project.dart
@@ -240,9 +240,10 @@ class TestProject {
     try {
       _fixturesCopy.deleteSync(recursive: true);
     } on FileSystemException catch (_) {
+      assert(Platform.isWindows);
       // On Windows, the build daemon process might still be accessing the
-      // working directory, so wait a second and then try again.
-      await Future.delayed(const Duration(seconds: 1));
+      // working directory, so wait a few seconds and then try again.
+      await Future.delayed(const Duration(seconds: 5));
       _fixturesCopy.deleteSync(recursive: true);
     }
   }
diff --git a/test_common/lib/utilities.dart b/test_common/lib/utilities.dart
index d4d3619be..1a960a509 100644
--- a/test_common/lib/utilities.dart
+++ b/test_common/lib/utilities.dart
@@ -12,10 +12,12 @@ const fixturesDirName = 'fixtures';
 
 const newDdcTypeSystemVersion = '3.3.0-242.0.dev';
 
+final _currentDirectory = p.current;
+
 /// The path to the webdev directory in the local machine, e.g.
 /// '/workstation/webdev'.
 String get webdevPath {
-  final pathParts = p.split(p.current);
+  final pathParts = p.split(_currentDirectory);
   assert(pathParts.contains(webdevDirName));
   return p.joinAll(
     pathParts.sublist(0, pathParts.lastIndexOf(webdevDirName) + 1),