diff --git a/clientapi/routing/auth_fallback.go b/clientapi/routing/auth_fallback.go
index 96674b156..ad870993e 100644
--- a/clientapi/routing/auth_fallback.go
+++ b/clientapi/routing/auth_fallback.go
@@ -113,12 +113,12 @@ func AuthFallback(
 
 	serveRecaptcha := func() {
 		data := map[string]string{
-			"myUrl":   req.URL.String(),
-			"session": sessionID,
-            "apiJsUrl": cfg.RecaptchaApiJsUrl,
-			"sitekey": cfg.RecaptchaPublicKey,
-            "sitekeyClass": cfg.RecaptchaSitekeyClass,
-            "formField": cfg.RecaptchaFormField,
+			"myUrl":        req.URL.String(),
+			"session":      sessionID,
+			"apiJsUrl":     cfg.RecaptchaApiJsUrl,
+			"sitekey":      cfg.RecaptchaPublicKey,
+			"sitekeyClass": cfg.RecaptchaSitekeyClass,
+			"formField":    cfg.RecaptchaFormField,
 		}
 		serveTemplate(w, recaptchaTemplate, data)
 	}
diff --git a/clientapi/routing/register.go b/clientapi/routing/register.go
index 8e58d4975..b9ebb0518 100644
--- a/clientapi/routing/register.go
+++ b/clientapi/routing/register.go
@@ -20,7 +20,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
-    "net"
+	"net"
 	"net/http"
 	"net/url"
 	"regexp"
@@ -337,7 +337,7 @@ func validateRecaptcha(
 	response string,
 	clientip string,
 ) *util.JSONResponse {
-    ip,_ ,_ := net.SplitHostPort(clientip)
+	ip, _, _ := net.SplitHostPort(clientip)
 	if !cfg.RecaptchaEnabled {
 		return &util.JSONResponse{
 			Code: http.StatusConflict,
diff --git a/dendrite-sample.polylith.yaml b/dendrite-sample.polylith.yaml
index bbbe16fdc..ecc3f4051 100644
--- a/dendrite-sample.polylith.yaml
+++ b/dendrite-sample.polylith.yaml
@@ -175,7 +175,13 @@ client_api:
   recaptcha_public_key: ""
   recaptcha_private_key: ""
   recaptcha_bypass_secret: ""
-  recaptcha_siteverify_api: ""
+
+  # To use hcaptcha.com instead of ReCAPTCHA, set the following parameters, otherwise just keep them empty.
+  # recaptcha_siteverify_api: "https://hcaptcha.com/siteverify"
+  # recaptcha_api_js_url: "https://js.hcaptcha.com/1/api.js"
+  # recaptcha_form_field: "h-captcha-response"
+  # recaptcha_sitekey_class: "h-captcha"
+
 
   # TURN server information that this homeserver should send to clients.
   turn:
diff --git a/setup/config/config_clientapi.go b/setup/config/config_clientapi.go
index 5d09ca2d9..0a871da18 100644
--- a/setup/config/config_clientapi.go
+++ b/setup/config/config_clientapi.go
@@ -32,12 +32,12 @@ type ClientAPI struct {
 	// Boolean stating whether catpcha registration is enabled
 	// and required
 	RecaptchaEnabled bool `yaml:"enable_registration_captcha"`
-    // Recaptcha api.js Url, for compatible with hcaptcha.com, etc.
-    RecaptchaApiJsUrl string `yaml:"recaptcha_api_js_url"`
-    // Recaptcha div class for sitekey, for compatible with hcaptcha.com, etc.
-    RecaptchaSitekeyClass string `yaml:"recaptcha_sitekey_class"`
-    // Recaptcha form field, for compatible with hcaptcha.com, etc.
-    RecaptchaFormField string `yaml:"recaptcha_form_field"`
+	// Recaptcha api.js Url, for compatible with hcaptcha.com, etc.
+	RecaptchaApiJsUrl string `yaml:"recaptcha_api_js_url"`
+	// Recaptcha div class for sitekey, for compatible with hcaptcha.com, etc.
+	RecaptchaSitekeyClass string `yaml:"recaptcha_sitekey_class"`
+	// Recaptcha form field, for compatible with hcaptcha.com, etc.
+	RecaptchaFormField string `yaml:"recaptcha_form_field"`
 	// This Home Server's ReCAPTCHA public key.
 	RecaptchaPublicKey string `yaml:"recaptcha_public_key"`
 	// This Home Server's ReCAPTCHA private key.
@@ -81,18 +81,18 @@ func (c *ClientAPI) Verify(configErrs *ConfigErrors, isMonolith bool) {
 		checkNotEmpty(configErrs, "client_api.recaptcha_public_key", c.RecaptchaPublicKey)
 		checkNotEmpty(configErrs, "client_api.recaptcha_private_key", c.RecaptchaPrivateKey)
 		checkNotEmpty(configErrs, "client_api.recaptcha_siteverify_api", c.RecaptchaSiteVerifyAPI)
-        if c.RecaptchaSiteVerifyAPI == "" {
-            c.RecaptchaSiteVerifyAPI = "https://www.google.com/recaptcha/api/siteverify"
-        }
-        if c.RecaptchaApiJsUrl == "" {
-            c.RecaptchaApiJsUrl = "https://www.google.com/recaptcha/api.js"
-        }
-        if c.RecaptchaFormField == "" {
-            c.RecaptchaFormField = "g-recaptcha"
-        }
-        if c.RecaptchaSitekeyClass == "" {
-            c.RecaptchaSitekeyClass = "g-recaptcha-response"
-        }
+		if c.RecaptchaSiteVerifyAPI == "" {
+			c.RecaptchaSiteVerifyAPI = "https://www.google.com/recaptcha/api/siteverify"
+		}
+		if c.RecaptchaApiJsUrl == "" {
+			c.RecaptchaApiJsUrl = "https://www.google.com/recaptcha/api.js"
+		}
+		if c.RecaptchaFormField == "" {
+			c.RecaptchaFormField = "g-recaptcha"
+		}
+		if c.RecaptchaSitekeyClass == "" {
+			c.RecaptchaSitekeyClass = "g-recaptcha-response"
+		}
 	}
 	// Ensure there is any spam counter measure when enabling registration
 	if !c.RegistrationDisabled && !c.OpenRegistrationWithoutVerificationEnabled {