diff --git a/_oasis b/_oasis
index da9c443b..b3f54836 100644
--- a/_oasis
+++ b/_oasis
@@ -26,7 +26,7 @@ Description:
 
 Flag "unix"
   Description:  Build the containers.unix library (depends on Unix)
-  Default:      false
+  Default:      true
 
 Flag "thread"
   Description:  Build modules that depend on threads