diff --git a/app/src/main/kotlin/com/tutpro/baresip/Utils.kt b/app/src/main/kotlin/com/tutpro/baresip/Utils.kt
index 46eaf466..4584b2d0 100644
--- a/app/src/main/kotlin/com/tutpro/baresip/Utils.kt
+++ b/app/src/main/kotlin/com/tutpro/baresip/Utils.kt
@@ -658,6 +658,7 @@ object Utils {
 
     class Crypto(val salt: ByteArray, val iter: Int, val iv: ByteArray, val data: ByteArray): Serializable {
         companion object {
+            @Suppress("ConstPropertyName")
             private const val serialVersionUID: Long = -29238082928391L
         }
     }