diff --git a/app/src/main/kotlin/com/tutpro/baresip/CallRow.kt b/app/src/main/kotlin/com/tutpro/baresip/CallRow.kt
index a456706c..fbd58c54 100644
--- a/app/src/main/kotlin/com/tutpro/baresip/CallRow.kt
+++ b/app/src/main/kotlin/com/tutpro/baresip/CallRow.kt
@@ -6,7 +6,7 @@ import kotlin.collections.ArrayList
 class CallRow(val aor: String, val peerUri: String, val direction: Int,
               startTime: GregorianCalendar?,
               val stopTime: GregorianCalendar,
-              var recording: String)
+              val recording: String)
 
 {