diff --git a/authfd.c b/authfd.c
index 6a7c072..42ca082 100644
--- a/authfd.c
+++ b/authfd.c
@@ -607,7 +607,7 @@
 	buffer_put_char(&msg, type);
 	buffer_put_cstring(&msg, reader_id);
 	buffer_put_cstring(&msg, pin);
-	
+
 	if (constrained) {
 		if (life != 0) {
 			buffer_put_char(&msg, SSH_AGENT_CONSTRAIN_LIFETIME);