diff --git a/core/assets/bundles/bundle_pl.properties b/core/assets/bundles/bundle_pl.properties
index f1379fd3d6..366a74b209 100644
--- a/core/assets/bundles/bundle_pl.properties
+++ b/core/assets/bundles/bundle_pl.properties
@@ -1933,6 +1933,7 @@ block.electrolyzer.name = Electrolyzer
 block.atmospheric-concentrator.name = Skraplacz Atmosferyczny
 block.oxidation-chamber.name = Komora Utleniająca
 block.electric-heater.name = Podgrzewacz Elektryczny
+block.slag-heater.name = Slag Heater
 block.phase-heater.name = Podgrzewacz Fazowy
 block.heat-redirector.name = Kierownik Ciepła
 block.slag-incinerator.name = Spalarnia Żużla