diff --git a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/BuiltinOperatorLowering.kt b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/BuiltinOperatorLowering.kt
index c8b56c60c5c..369c9968f81 100644
--- a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/BuiltinOperatorLowering.kt
+++ b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/BuiltinOperatorLowering.kt
@@ -184,7 +184,7 @@ internal class BuiltinOperatorLowering(val context: Context) : FileLoweringPass,
         }
     }
 
-    private fun lowerCheckNotNull(expression: IrCall) = builder.at(expression).irBlock {
+    private fun lowerCheckNotNull(expression: IrCall) = builder.at(expression).irBlock(resultType = expression.type) {
         val temp = irTemporary(expression.getValueArgument(0)!!)
         +irIfThen(context.irBuiltIns.unitType, irEqeqNull(irGet(temp)), irCall(symbols.ThrowNullPointerException))
         +irGet(temp)
diff --git a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/ir/util/IrUtils2.kt b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/ir/util/IrUtils2.kt
index 6aa3e1ed6ec..40ae38c1424 100644
--- a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/ir/util/IrUtils2.kt
+++ b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/ir/util/IrUtils2.kt
@@ -152,7 +152,7 @@ fun IrBuilderWithScope.irForceNotNull(expression: IrExpression): IrExpression {
         return expression
     }
 
-    return irCall(context.irBuiltIns.checkNotNullSymbol).apply {
+    return irCall(context.irBuiltIns.checkNotNullSymbol, expression.type.makeNotNull()).apply {
         putValueArgument(0, expression)
     }
 }