diff --git a/src/main/kotlin/ru/dbotthepony/mc/otm/storage/VirtualComponent.kt b/src/main/kotlin/ru/dbotthepony/mc/otm/storage/VirtualComponent.kt
index 89e2559c1..652d4a26b 100644
--- a/src/main/kotlin/ru/dbotthepony/mc/otm/storage/VirtualComponent.kt
+++ b/src/main/kotlin/ru/dbotthepony/mc/otm/storage/VirtualComponent.kt
@@ -263,7 +263,7 @@ open class PoweredComponent<T : IStorageStack>(open val parent: IStorageComponen
 			}
 
 			if (!simulate) {
-				val requiredNew = storageType.energyPerOperation * stack.count - leftover.count
+				val requiredNew = storageType.energyPerOperation * (stack.count - leftover.count)
 				energy.extractEnergyInner(requiredNew, false)
 			}