diff --git a/lib/modules/Calendar.pmod/Timezone.pmod b/lib/modules/Calendar.pmod/Timezone.pmod
index 10c2ff33fda9374b915d151c4a152c03fdcb553f..69e31b675a38055360b899a9b5df997d3c709694 100644
--- a/lib/modules/Calendar.pmod/Timezone.pmod
+++ b/lib/modules/Calendar.pmod/Timezone.pmod
@@ -1318,8 +1318,10 @@ class Runtime_timezone_compiler
       "europe",
       "northamerica",
       "southamerica",
+#if 0
       "pacificnew",
       "systemv",
+#endif
    });
 
    mapping zone_cache;