diff --git a/Sources/Testing/Test+Macro.swift b/Sources/Testing/Test+Macro.swift
index 1b1bb59a3..4e9a349d4 100644
--- a/Sources/Testing/Test+Macro.swift
+++ b/Sources/Testing/Test+Macro.swift
@@ -719,7 +719,7 @@ extension Test {
     arguments zippedCollections: @escaping @Sendable () async throws -> Zip2Sequence<C1, C2>,
     sourceBounds: __SourceBounds,
     parameters paramTuples: [__Parameter],
-    testFunction: nonisolated(nonsending) @escaping @Sendable (C1.Element, C2.Element) async throws -> Void
+    testFunction: nonisolated(nonsending) @escaping @Sendable ((C1.Element, C2.Element)) async throws -> Void
   ) -> Self where S: ~Copyable & ~Escapable, C1: Collection & Sendable, C1.Element: Sendable, C2: Collection & Sendable, C2.Element: Sendable {
     let containingTypeInfo = containingType.map { TypeInfo($0, sourceBounds: sourceBounds) }
     let parameters = paramTuples.parameters
@@ -754,7 +754,7 @@ extension Test {
     arguments zippedCollections: @escaping @Sendable () async throws -> Zip2Sequence<C1, C2>,
     sourceBounds: __SourceBounds,
     parameters paramTuples: [__Parameter],
-    testFunction: nonisolated(nonsending) @escaping @Sendable (C1.Element, C2.Element) async throws -> Void
+    testFunction: nonisolated(nonsending) @escaping @Sendable ((C1.Element, C2.Element)) async throws -> Void
   ) -> Self where S: ~Copyable & ~Escapable, C1: Collection & Sendable, C1.Element: Sendable & CustomTestStringConvertible, C2: Collection & Sendable, C2.Element: Sendable & CustomTestStringConvertible {
     let containingTypeInfo = containingType.map { TypeInfo($0, sourceBounds: sourceBounds) }
     let parameters = paramTuples.parameters
diff --git a/Tests/TestingTests/ZipTests.swift b/Tests/TestingTests/ZipTests.swift
index bd767b222..76e19323b 100644
--- a/Tests/TestingTests/ZipTests.swift
+++ b/Tests/TestingTests/ZipTests.swift
@@ -25,4 +25,9 @@ struct ZipTests {
   func allElementsEqual(i: Int, j: Int) {
     #expect(i == j)
   }
+
+  @Test("Zipped collections can be passed as a single argument", arguments: zip("abc", "def"))
+  func singleArgument(ij: (Character, Character)) {
+    #expect(ij.0 < ij.1)
+  }
 }