diff --git a/src/libguac/protocol.c b/src/libguac/protocol.c
index f58179f3..46a9858e 100644
--- a/src/libguac/protocol.c
+++ b/src/libguac/protocol.c
@@ -94,7 +94,7 @@ static int __guac_protocol_send_args(guac_socket* socket, const char** args) {
 
     if (guac_socket_write_string(socket, "4.args")) return -1;
     
-    // Send protocol version
+    /* Send protocol version ahead of other args. */
     if (guac_socket_write_string(socket, ",")
             || __guac_socket_write_length_string(socket, GUACAMOLE_PROTOCOL_VERSION))
         return -1;