diff --git a/dat/missions/cargo.lua b/dat/missions/cargo.lua
index c7cf434..a76d7c5 100644
--- a/dat/missions/cargo.lua
+++ b/dat/missions/cargo.lua
@@ -54,6 +54,7 @@ function create()
     misn.setTitle(string.format(title[11], planet))
   else -- People delivery :P
     misn_type = "People"
+    carg_mass = 0
     i = rnd.int(5)
     if i < 2 then
       carg_type = "Colonists"