diff --git a/PHI-CL/data-updates.lua b/PHI-CL/data-updates.lua
index 61f1ad2..b9df1a8 100644
--- a/PHI-CL/data-updates.lua
+++ b/PHI-CL/data-updates.lua
@@ -41,7 +41,7 @@ if (settings.startup['PHI-MI'].value and settings.startup['PHI-MI-GENERIC'].valu
         local s = {}
 
         for _, v in pairs(data.raw['technology']) do
-            if (v.max_level and v.max_level == 'infinite') and (v.hidden and v.hidden == false) then
+            if (v.max_level and v.max_level == 'infinite') and v.hidden ~= true then
                 table.insert(s, {
                     type = 'virtual-signal',
                     name = 'signal-' .. v.name,