diff --git a/android/app/src/test/java/au/audasmedia/webrestrict/kids/IpPacketTest.kt b/android/app/src/test/java/au/audasmedia/webrestrict/kids/IpPacketTest.kt
index 83bb097..cd5da4e 100644
--- a/android/app/src/test/java/au/audasmedia/webrestrict/kids/IpPacketTest.kt
+++ b/android/app/src/test/java/au/audasmedia/webrestrict/kids/IpPacketTest.kt
@@ -8,8 +8,8 @@ import org.junit.Test
 /** IPv4/UDP parsing and building for the DNS forwarder (FR-18). Pure tests. */
 class IpPacketTest {
 
-    private val clientIp = byteArrayOf(10, 111, 222, 1)
-    private val dnsIp = byteArrayOf(10, 111, 222, 2)
+    private val clientIp = byteArrayOf(10, 111, 222.toByte(), 1)
+    private val dnsIp = byteArrayOf(10, 111, 222.toByte(), 2)
 
     @Test
     fun `builds a packet that parses back`() {