diff --git a/ffi/tests/api.kt b/ffi/tests/api.kt
index f612fb117..601e2bb11 100644
--- a/ffi/tests/api.kt
+++ b/ffi/tests/api.kt
@@ -169,7 +169,7 @@ fun script() {
 
 	println("total ${total(RangeU64(2u, 5u))}")
 	println("reach ${reach(2u, 5u)}")
-	val two = java.math.BigInteger.TWO
+	val two = java.math.BigInteger.valueOf(2)
 	val scaled = listOf(scaled(two.pow(128) - java.math.BigInteger.ONE, 1u), scaled(two.pow(64) + java.math.BigInteger.ONE, 1uL shl 63), scaled(two.pow(127), 2u))
 	println("scaled " + scaled.joinToString(" ") { it?.toString(16)?.padStart(32, '0') ?: "none" })
 	for (v in listOf(two.pow(128), java.math.BigInteger.ONE.negate())) {