diff --git a/api.lua b/api.lua
index e56e34a..b52dec1 100644
--- a/api.lua
+++ b/api.lua
@@ -3963,6 +3963,10 @@ function mobs:capture_mob(self, clicker, chance_hand, chance_net, chance_lasso,
 				new_stack = ItemStack(mobname .. "_set")
 
 				local tmp = {}
+                
+				if self.type == "monster" then
+					self["remove_ok"] = false
+				end
 
 				for _,stat in pairs(self) do
 					local t = type(stat)