diff --git a/develop/libyaml/libyaml.desc b/develop/libyaml/libyaml.desc
index 29bb7fcc7..1b356e74b 100644
--- a/develop/libyaml/libyaml.desc
+++ b/develop/libyaml/libyaml.desc
@@ -27,6 +27,6 @@
 [L] MIT
 [S] Stable
 [V] 0.1.5
-[P] X -----5---9 800.000
+[P] X -?---5---9 800.000
 
 [D] 336895324 yaml-0.1.5.tar.gz http://pyyaml.org/download/libyaml/