diff --git a/Sources/ViewInspection/Reflection/ReflectionNode.swift b/Sources/ViewInspection/Reflection/ReflectionNode.swift
index 56f4a90..89bb8cb 100644
--- a/Sources/ViewInspection/Reflection/ReflectionNode.swift
+++ b/Sources/ViewInspection/Reflection/ReflectionNode.swift
@@ -31,7 +31,7 @@ extension ReflectionNode {
         tree.filter(CP.isValid).map(CP.init).filter(filter)
     }
 
-    func one<CP: ReflectionElement>(_ t: AnyInspectable<CP> = .some, _ filter: (CP) -> Bool = { _ in true }) throws -> CP {
+    @discardableResult func one<CP: ReflectionElement>(_ t: AnyInspectable<CP> = .some, _ filter: (CP) -> Bool = { _ in true }) throws -> CP {
         let items = all(t, filter)
         if items.count != 1 {
             throw ViewInspectionError.wrongNumberOfItems
diff --git a/Tests/ViewInspectionTests/PropertyWrappersTests.swift b/Tests/ViewInspectionTests/PropertyWrappersTests.swift
index 272de0a..a5baa81 100644
--- a/Tests/ViewInspectionTests/PropertyWrappersTests.swift
+++ b/Tests/ViewInspectionTests/PropertyWrappersTests.swift
@@ -15,19 +15,19 @@ final class PropertyWrappersTests: XCTestCase {}
         XCTAssert(t[1].node.parent === t[0].node)
     }
 
-    func testState() {
+    func testState() throws {
         struct Dummy: View {
             @State private var x = 0
             let body = EmptyView()
         }
-        XCTAssertEqual(Dummy().snap.all(.state).count, 1)
+        try Dummy().snap.one(.state)
     }
 
-    func testBinding() {
+    func testBinding() throws {
         struct Dummy: View {
             @Binding var x: Int
             let body = EmptyView()
         }
-        XCTAssertEqual(Dummy(x: .constant(1)).snap.all(.binding).count, 1)
+        try Dummy(x: .constant(1)).snap.one(.binding)
     }
 }