diff --git a/sap/server.c b/sap/server.c
index 8612d0d..f66e23f 100644
--- a/sap/server.c
+++ b/sap/server.c
@@ -244,9 +244,6 @@ static int send_message(struct sap_connection *conn, void *buf, size_t size)
 	GError *gerr = NULL;
 	GIOStatus gstatus;
 
-	if (!conn || !buf)
-		return -EINVAL;
-
 	SAP_VDBG("conn %p, size %zu", conn, size);
 
 	gstatus = g_io_channel_write_chars(conn->io, buf, size, &written,