diff --git a/src/main/kotlin/ru/dbotthepony/mc/otm/capability/fluid/AbstractMatteryFluidHandler.kt b/src/main/kotlin/ru/dbotthepony/mc/otm/capability/fluid/AbstractMatteryFluidHandler.kt
index 4b55a6bf7..ded8ab5a4 100644
--- a/src/main/kotlin/ru/dbotthepony/mc/otm/capability/fluid/AbstractMatteryFluidHandler.kt
+++ b/src/main/kotlin/ru/dbotthepony/mc/otm/capability/fluid/AbstractMatteryFluidHandler.kt
@@ -50,7 +50,7 @@ abstract class AbstractMatteryFluidHandler : IFluidHandler {
 		val fluid = fluid
 
 		if (fluid.isEmpty || fluid.isFluidEqual(resource)) {
-			val new = (fluid.amount + resource.amount).coerceAtMost(capacity)
+			val new = (fluid.amount.toLong() + resource.amount.toLong()).coerceAtMost(capacity.toLong()).toInt()
 			if (new <= fluid.amount) return 0
 
 			if (action.execute()) {
@@ -86,7 +86,7 @@ abstract class AbstractMatteryFluidHandler : IFluidHandler {
 		if (fluid.isEmpty) {
 			return FluidStack.EMPTY
 		} else {
-			val new = (fluid.amount - maxDrain).coerceAtLeast(0)
+			val new = (fluid.amount.toLong() - maxDrain.toLong()).coerceAtLeast(0L).toInt()
 
 			if (action.execute()) {
 				if (new == 0) {