diff --git a/lua/wire/server/wirelib.lua b/lua/wire/server/wirelib.lua
index 54662827..70cc15a8 100644
--- a/lua/wire/server/wirelib.lua
+++ b/lua/wire/server/wirelib.lua
@@ -1271,6 +1271,7 @@ function WireLib.CheckRegex(data, pattern)
 end
 
 local material_blacklist = {
+	["pp/copy"] = true,
 	["engine/writez"] = true,
 	["debug/debugluxels"] = true, -- Crashes linux client
 	["effects/ar2_altfire1"] = true