diff --git a/base/tzdata/tzdata.desc b/base/tzdata/tzdata.desc
index eae22f37b..d7c76f39c 100644
--- a/base/tzdata/tzdata.desc
+++ b/base/tzdata/tzdata.desc
@@ -30,7 +30,7 @@
 [L] PublicDomain
 [S] Stable
 [V] 2013i
-[P] X -?---5---9 120.000
+[P] X -1---5---9 120.000
 
 [CV-URL] http://www.iana.org/time-zones