diff --git a/src/libguac/guacamole/protocol-types.h b/src/libguac/guacamole/protocol-types.h
index ee9c6683..ea76910d 100644
--- a/src/libguac/guacamole/protocol-types.h
+++ b/src/libguac/guacamole/protocol-types.h
@@ -87,6 +87,12 @@ typedef enum guac_protocol_status {
      */
     GUAC_PROTOCOL_STATUS_RESOURCE_CONFLICT = 0x205,
 
+    /**
+     * The operation could not be performed as the requested resource is now
+     * closed.
+     */
+    GUAC_PROTOCOL_STATUS_RESOURCE_CLOSED = 0x0206,
+
     /**
      * The operation could not be performed because bad parameters were
      * given.