diff --git a/GameData/RealismOverhaul/Engine_Configs/EngineVariants_Config.cfg b/GameData/RealismOverhaul/Engine_Configs/EngineVariants_Config.cfg
index 14be1b59ca..b4a422be15 100644
--- a/GameData/RealismOverhaul/Engine_Configs/EngineVariants_Config.cfg
+++ b/GameData/RealismOverhaul/Engine_Configs/EngineVariants_Config.cfg
@@ -67,6 +67,10 @@
 	{
 		@origMass += #$../massOffset$
 	}
+	@MODULE[ModuleBimodalEngineConfigs]
+	{
+		@origMass += #$../massOffset$
+	}
 }
 
 //  ==================================================
@@ -80,6 +84,10 @@
 	{
 		!origMass = 0
 	}
+	@MODULE[ModuleBimodalEngineConfigs]
+	{
+		!origMass = 0
+	}
 }
 
 //  ==================================================