diff --git a/mocks/mocks.go b/mocks/mocks.go
index 860453a23e0..79446f94ad6 100644
--- a/mocks/mocks.go
+++ b/mocks/mocks.go
@@ -38,7 +38,7 @@ func (mock *DNSResolver) LookupTXT(hostname string) ([]string, error) {
 		return nil, fmt.Errorf("SERVFAIL")
 	}
 	if hostname == "_acme-challenge.good-dns01.com" {
-		// base64(sha254("LoqXcYV8q5ONbJQxbmR7SCTNo3tiAXDfowyjxAjEuX0"
+		// base64(sha256("LoqXcYV8q5ONbJQxbmR7SCTNo3tiAXDfowyjxAjEuX0"
 		//               + "." + "9jg46WB3rR_AHD-EBXdN7cBkH1WOu0tA3M9fm21mqTI"))
 		// expected token + test account jwk thumbprint
 		return []string{"LPsIwTo7o8BoG0-vjCyGQGBWSVIPxI-i_X336eUOQZo"}, nil