diff --git a/site/e2e/helpers.ts b/site/e2e/helpers.ts
index db0896743a..06b55a5c92 100644
--- a/site/e2e/helpers.ts
+++ b/site/e2e/helpers.ts
@@ -210,9 +210,23 @@ export const verifyParameters = async (
 				switch (richParameter.type) {
 					case "bool":
 						{
+							// Use auto-retrying assertions to avoid capturing
+							// a stale default value before data hydration
+							// completes.
 							const parameterField = parameterLabel.locator("input");
-							const value = await parameterField.isChecked();
-							expect(value.toString()).toEqual(buildParameter.value);
+							if (buildParameter.value === "true") {
+								await expect(parameterField).toBeChecked({
+									timeout: 15_000,
+								});
+							} else if (buildParameter.value === "false") {
+								await expect(parameterField).not.toBeChecked({
+									timeout: 15_000,
+								});
+							} else {
+								throw new Error(
+									`Invalid boolean build parameter value: ${buildParameter.value}`,
+								);
+							}
 						}
 						break;
 					case "string":