diff --git a/tests/units/components/core/test_colors.py b/tests/units/components/core/test_colors.py
index 0246f8006..7aa5bbca9 100644
--- a/tests/units/components/core/test_colors.py
+++ b/tests/units/components/core/test_colors.py
@@ -31,7 +31,7 @@ def create_color_var(color):
         (create_color_var(rx.color("mint", 3, True)), '"var(--mint-a3)"', Color),
         (
             create_color_var(rx.color(ColorState.color, ColorState.shade)),  # type: ignore
-            f'("var(--"+{str(color_state_name)}.color+"-"+(Object.prototype.toString({str(color_state_name)}.shade))+")")',
+            f'("var(--"+{str(color_state_name)}.color+"-"+(((__to_string) => __to_string.toString())({str(color_state_name)}.shade))+")")',
             Color,
         ),
         (