diff --git a/prototypes/electronic/el_ki/el_ki_beacon.lua b/prototypes/electronic/el_ki/el_ki_beacon.lua
index b74df6f..6789d6a 100644
--- a/prototypes/electronic/el_ki/el_ki_beacon.lua
+++ b/prototypes/electronic/el_ki/el_ki_beacon.lua
@@ -212,7 +212,7 @@ data:extend({
         },
         energy_usage = '40MW',
         module_specification = {
-            module_slots = 20,
+            module_slots = 18,
             module_info_icon_shift = {0, 0.5},
             module_info_multi_row_initial_height_modifier = -0.3,
         },