diff --git a/dat/missions/es_cargo.lua b/dat/missions/es_cargo.lua
index 3e8bb57..a745ee1 100644
--- a/dat/missions/es_cargo.lua
+++ b/dat/missions/es_cargo.lua
@@ -69,6 +69,15 @@ function land()
     if player.rmCargo(carg_id) then
       player.pay(reward)
       tk.msg(finish_title, string.format(finish_msg, carg_type))
+
+      -- Increase empire shipping mission counter.
+      n = var.peek("es_misn")
+      if n ~= nil then
+        var_push("es_misn", n+1)
+      else
+        var.push("es_misn", 1)
+      end
+
       misn.finish(true)
     else
       tk.msg(miss_title, string.format(miss_msg, carg_mass, carg_type))