diff --git a/Sources/Testing/Running/Configuration.swift b/Sources/Testing/Running/Configuration.swift
index 7a25cc4c9..f50d39176 100644
--- a/Sources/Testing/Running/Configuration.swift
+++ b/Sources/Testing/Running/Configuration.swift
@@ -177,29 +177,10 @@ public struct Configuration: Sendable {
 /// - Parameters:
 ///   - selection: A set of test IDs to be filtered.
 ///
-/// By default, all tests are run and no filter is set.
+/// - Returns: A test filter that filters tests to those specified by
+///   `selection`.
 @_spi(ExperimentalTestRunning)
 public func makeTestFilter(matching selection: some Collection<Test.ID>) -> Configuration.TestFilter {
   let selection = Test.ID.Selection(testIDs: selection)
-  return makeTestFilter(matching: selection, includeHiddenTests: false)
+  return selection.contains
 }
-
-/// Make a test filter that filters tests to those specified by a set of test
-/// IDs, optionally including or excluding hidden tests.
-///
-/// - Parameters:
-///   - selection: A selection of test IDs to be filtered.
-///   - includeHiddenTests: If false, a test annotated with the `.hidden`
-///     trait will not be included, even if its ID is present in `selection`.
-///
-/// By default, all tests are run and no filter is set.
-func makeTestFilter(matching selection: Test.ID.Selection, includeHiddenTests: Bool) -> Configuration.TestFilter {
-  if includeHiddenTests {
-    return selection.contains
-  } else {
-    return { test in
-      !test.isHidden && selection.contains(test)
-    }
-  }
-}
-
diff --git a/Tests/TestingTests/PlanTests.swift b/Tests/TestingTests/PlanTests.swift
index 27005d5ae..56cc7d5a0 100644
--- a/Tests/TestingTests/PlanTests.swift
+++ b/Tests/TestingTests/PlanTests.swift
@@ -26,9 +26,9 @@ struct PlanTests {
       testB,
     ]
 
-    let selection = Test.ID.Selection(testIDs: [innerTestType.id])
+    let selection = [innerTestType.id]
     var configuration = Configuration()
-    configuration.uncheckedTestFilter = makeTestFilter(matching: selection, includeHiddenTests: true)
+    configuration.uncheckedTestFilter = makeTestFilter(matching: selection)
 
     let plan = await Runner.Plan(tests: tests, configuration: configuration)
     #expect(plan.steps.contains(where: { $0.test == outerTestType }))
@@ -52,8 +52,8 @@ struct PlanTests {
     ]
 
     var configuration = Configuration()
-    let selection = Test.ID.Selection(testIDs: [innerTestType.id, outerTestType.id])
-    configuration.uncheckedTestFilter = makeTestFilter(matching: selection, includeHiddenTests: true)
+    let selection = [innerTestType.id, outerTestType.id]
+    configuration.uncheckedTestFilter = makeTestFilter(matching: selection)
 
     let plan = await Runner.Plan(tests: tests, configuration: configuration)
     let planTests = plan.steps.map(\.test)
@@ -72,8 +72,8 @@ struct PlanTests {
     let tests = [outerTestType, deeplyNestedTest]
 
     var configuration = Configuration()
-    let selection = Test.ID.Selection(testIDs: [outerTestType.id, deeplyNestedTest.id])
-    configuration.uncheckedTestFilter = makeTestFilter(matching: selection, includeHiddenTests: true)
+    let selection = [outerTestType.id, deeplyNestedTest.id]
+    configuration.uncheckedTestFilter = makeTestFilter(matching: selection)
 
     let plan = await Runner.Plan(tests: tests, configuration: configuration)
 
@@ -91,8 +91,8 @@ struct PlanTests {
     let tests = [testSuiteA, testSuiteB, testSuiteC, testFuncX]
 
     var configuration = Configuration()
-    let selection = Test.ID.Selection(testIDs: [testSuiteA.id])
-    configuration.uncheckedTestFilter = makeTestFilter(matching: selection, includeHiddenTests: true)
+    let selection = [testSuiteA.id]
+    configuration.uncheckedTestFilter = makeTestFilter(matching: selection)
 
     let plan = await Runner.Plan(tests: tests, configuration: configuration)
     let testFuncXWithTraits = try #require(plan.steps.map(\.test).first { $0.name == "x()" })
diff --git a/Tests/TestingTests/Runner.Plan.SnapshotTests.swift b/Tests/TestingTests/Runner.Plan.SnapshotTests.swift
index 7456f569e..73a6b6650 100644
--- a/Tests/TestingTests/Runner.Plan.SnapshotTests.swift
+++ b/Tests/TestingTests/Runner.Plan.SnapshotTests.swift
@@ -22,7 +22,7 @@ struct Runner_Plan_SnapshotTests {
     let suite = try #require(await test(for: Runner_Plan_SnapshotFixtures.self))
 
     var configuration = Configuration()
-    configuration.uncheckedTestFilter = makeTestFilter(matching: .init(testIDs: [suite.id]), includeHiddenTests: true)
+    configuration.uncheckedTestFilter = makeTestFilter(matching: [suite.id])
 
     let plan = await Runner.Plan(configuration: configuration)
     let snapshot = Runner.Plan.Snapshot(snapshotting: plan)
diff --git a/Tests/TestingTests/RunnerTests.swift b/Tests/TestingTests/RunnerTests.swift
index 5d17751fe..dd31b765b 100644
--- a/Tests/TestingTests/RunnerTests.swift
+++ b/Tests/TestingTests/RunnerTests.swift
@@ -250,8 +250,8 @@ final class RunnerTests: XCTestCase {
     let testFunc = try #require(await testFunction(named: "duelingConditions()", in: NeverRunTests.self))
 
     var configuration = Configuration()
-    let selection = Test.ID.Selection(testIDs: [testSuite.id])
-    configuration.uncheckedTestFilter = makeTestFilter(matching: selection, includeHiddenTests: true)
+    let selection = [testSuite.id]
+    configuration.uncheckedTestFilter = makeTestFilter(matching: selection)
 
     let runner = await Runner(testing: [
       testSuite,
@@ -301,8 +301,7 @@ final class RunnerTests: XCTestCase {
     XCTAssertFalse(selectedTestIDs.isEmpty)
 
     var configuration = Configuration()
-    let selection = Test.ID.Selection(testIDs: selectedTestIDs)
-    configuration.uncheckedTestFilter = makeTestFilter(matching: selection, includeHiddenTests: true)
+    configuration.uncheckedTestFilter = makeTestFilter(matching: selectedTestIDs)
 
     let runner = await Runner(configuration: configuration)
     let plan = runner.plan
@@ -326,7 +325,7 @@ final class RunnerTests: XCTestCase {
     ]
 
     var configuration1 = Configuration()
-    configuration1.testFilter = makeTestFilter(matching: .init(testIDs: selectedTestIDs), includeHiddenTests: false)
+    configuration1.testFilter = makeTestFilter(matching: selectedTestIDs)
 
     var configuration2 = Configuration()
     configuration2.testFilter = makeTestFilter(matching: selectedTestIDs)
diff --git a/Tests/TestingTests/TestSupport/TestingAdditions.swift b/Tests/TestingTests/TestSupport/TestingAdditions.swift
index 5a069bf12..71fa31457 100644
--- a/Tests/TestingTests/TestSupport/TestingAdditions.swift
+++ b/Tests/TestingTests/TestSupport/TestingAdditions.swift
@@ -67,8 +67,8 @@ func runTest(for containingType: Any.Type, configuration: Configuration = .init(
 /// If no test is found representing `containingType`, nothing is run.
 func runTestFunction(named name: String, in containingType: Any.Type, configuration: Configuration = .init()) async {
   var configuration = configuration
-  let selection = Test.ID.Selection(testIDs: [Test.ID(type: containingType).child(named: name)])
-  configuration.uncheckedTestFilter = makeTestFilter(matching: selection, includeHiddenTests: true)
+  let selection = [Test.ID(type: containingType).child(named: name)]
+  configuration.uncheckedTestFilter = makeTestFilter(matching: selection)
 
   let runner = await Runner(configuration: configuration)
   await runner.run()
@@ -91,8 +91,8 @@ extension Runner {
     let moduleName = String(fileID[..<fileID.lastIndex(of: "/")!])
 
     var configuration = configuration
-    let selection = Test.ID.Selection(testIDs: [Test.ID(moduleName: moduleName, nameComponents: [testName], sourceLocation: nil)])
-    configuration.uncheckedTestFilter = makeTestFilter(matching: selection, includeHiddenTests: true)
+    let selection = [Test.ID(moduleName: moduleName, nameComponents: [testName], sourceLocation: nil)]
+    configuration.uncheckedTestFilter = makeTestFilter(matching: selection)
 
     await self.init(configuration: configuration)
   }
@@ -106,8 +106,8 @@ extension Runner.Plan {
   ///   - configuration: The configuration to use for planning.
   init(selecting containingType: Any.Type, configuration: Configuration = .init()) async {
     var configuration = configuration
-    let selection = Test.ID.Selection(testIDs: [Test.ID(type: containingType)])
-    configuration.uncheckedTestFilter = makeTestFilter(matching: selection, includeHiddenTests: true)
+    let selection = [Test.ID(type: containingType)]
+    configuration.uncheckedTestFilter = makeTestFilter(matching: selection)
 
     await self.init(configuration: configuration)
   }