diff --git a/plugins/keysend.c b/plugins/keysend.c
index 97196a3a5c59..94e48b0a3705 100644
--- a/plugins/keysend.c
+++ b/plugins/keysend.c
@@ -163,7 +163,8 @@ static struct command_result *json_keysend(struct command *cmd, const char *buf,
 	p->payment_secret = NULL;
 	p->amount = *msat;
 	p->routes = NULL;
-	p->min_final_cltv_expiry = DEFAULT_FINAL_CLTV_DELTA;
+	// Use a slightly more conservative expiry than the default.
+	p->min_final_cltv_expiry = DEFAULT_FINAL_CLTV_DELTA + 4;
 	p->features = NULL;
 	p->invstring = NULL;
 	p->why = "Initial attempt";