diff --git a/roles/matrix-synapse/templates/synapse/homeserver.yaml.j2 b/roles/matrix-synapse/templates/synapse/homeserver.yaml.j2
index e0b57f691..3cbb5a78f 100644
--- a/roles/matrix-synapse/templates/synapse/homeserver.yaml.j2
+++ b/roles/matrix-synapse/templates/synapse/homeserver.yaml.j2
@@ -934,12 +934,12 @@ url_preview_accept_language:
 # This homeserver's ReCAPTCHA public key. Must be specified if
 # enable_registration_captcha is enabled.
 #
-#recaptcha_public_key: {{ matrix_synapse_recaptcha_public_key }}
+recaptcha_public_key: {{ matrix_synapse_recaptcha_public_key }}
 
 # This homeserver's ReCAPTCHA private key. Must be specified if
 # enable_registration_captcha is enabled.
 #
-#recaptcha_private_key: {{ matrix_synapse_recaptcha_private_key }}
+recaptcha_private_key: {{ matrix_synapse_recaptcha_private_key }}
 
 # Uncomment to enable ReCaptcha checks when registering, preventing signup
 # unless a captcha is answered. Requires a valid ReCaptcha