diff --git a/core/src/main/kotlin/com/r3corda/core/serialization/Kryo.kt b/core/src/main/kotlin/com/r3corda/core/serialization/Kryo.kt
index 1d582082f4..e63962ac10 100644
--- a/core/src/main/kotlin/com/r3corda/core/serialization/Kryo.kt
+++ b/core/src/main/kotlin/com/r3corda/core/serialization/Kryo.kt
@@ -212,12 +212,12 @@ inline fun <T> Kryo.useClassLoader(cl: ClassLoader, body: () -> T) : T {
     }
 }
 
-inline fun Output.writeBytesWithLength(byteArray: ByteArray) {
+fun Output.writeBytesWithLength(byteArray: ByteArray) {
     this.writeInt(byteArray.size, true)
     this.writeBytes(byteArray)
 }
 
-inline fun Input.readBytesWithLength(): ByteArray {
+fun Input.readBytesWithLength(): ByteArray {
     val size = this.readInt(true)
     return this.readBytes(size)
 }
diff --git a/core/src/test/kotlin/com/r3corda/core/serialization/KryoTests.kt b/core/src/test/kotlin/com/r3corda/core/serialization/KryoTests.kt
index 6734f755fb..3b5d29ee82 100644
--- a/core/src/test/kotlin/com/r3corda/core/serialization/KryoTests.kt
+++ b/core/src/test/kotlin/com/r3corda/core/serialization/KryoTests.kt
@@ -3,7 +3,6 @@ package com.r3corda.core.serialization
 import com.google.common.primitives.Ints
 import com.r3corda.core.crypto.generateKeyPair
 import com.r3corda.core.crypto.signWithECDSA
-import com.r3corda.core.crypto.verifyWithECDSA
 import org.assertj.core.api.Assertions.assertThat
 import org.assertj.core.api.Assertions.assertThatThrownBy
 import org.junit.Test