diff --git a/lua/weapons/disguiser/init.lua b/lua/weapons/disguiser/init.lua
index 533de40..af35bb5 100644
--- a/lua/weapons/disguiser/init.lua
+++ b/lua/weapons/disguiser/init.lua
@@ -109,8 +109,8 @@ function SWEP:Disguise(entity)
 	// Make sure the new model is actually marked as a prop
 	if (
 		!string.sub(string.lower(entity:GetClass()), 1, 5) == "prop_"
-		&& !string.sub(string.lower(entity:GetClass()), -5, 5) == "_prop"
-		&& string.find(string.lower(entity:GetClass()), "_prop_") == nil
+		|| !string.sub(string.lower(entity:GetClass()), -5, 5) == "_prop"
+		|| string.find(string.lower(entity:GetClass()), "_prop_") == nil
 		) then return false end
 	
 	local physobj = entity:GetPhysicsObject()