diff --git a/api/challenge.go b/api/challenge.go
index 5733c8d8a3..544d5e772e 100644
--- a/api/challenge.go
+++ b/api/challenge.go
@@ -21,7 +21,7 @@ const respChallengeHtml = `
 			} else {
 				window.parent.postMessage("verificationFailed", "*");
 			}
-		}).cache(() => {
+		}).catch(() => {
 			window.parent.postMessage("verificationFailed", "*");
 		});
 	}
diff --git a/cloudflare/worker.js b/cloudflare/worker.js
index 578baaec69..911b93f126 100644
--- a/cloudflare/worker.js
+++ b/cloudflare/worker.js
@@ -207,7 +207,7 @@ const challengeResponseBody = `
 			} else {
 				window.parent.postMessage("verificationFailed", "*");
 			}
-		}).cache(() => {
+		}).catch(() => {
 			window.parent.postMessage("verificationFailed", "*");
 		});
 	}