diff --git a/src/testing/mod.rs b/src/testing/mod.rs
index 0db491c..195ed87 100644
--- a/src/testing/mod.rs
+++ b/src/testing/mod.rs
@@ -95,7 +95,7 @@ impl Client {
                 switch_button(Color::GREEN, span_test, "span test"),
                 switch_button(Color::BLUE, span_add, "span add test"),
             )
-                .span(Dir::RIGHT, [1, 1, 1]),
+                .span(Dir::RIGHT, [1; _]),
         );
         let add_button = Rect::new(Color::LIME)
             .radius(30)