diff --git a/app/src/main/kotlin/com/tutpro/baresip/Call.kt b/app/src/main/kotlin/com/tutpro/baresip/Call.kt
index cc78e675..ac113a08 100644
--- a/app/src/main/kotlin/com/tutpro/baresip/Call.kt
+++ b/app/src/main/kotlin/com/tutpro/baresip/Call.kt
@@ -48,15 +48,11 @@ open class Call(val callp: Long, val ua: UserAgent, val peerUri: String, val dir
     val focusDtmf: MutableState<Boolean> = mutableStateOf(false)
 
     fun add() {
-        synchronized(BaresipService.calls) {
-            BaresipService.calls.add(this)
-        }
+        synchronized(BaresipService.calls) { BaresipService.calls.add(this) }
     }
 
     fun remove() {
-        synchronized(BaresipService.calls) {
-            BaresipService.calls.remove(this)
-        }
+        synchronized(BaresipService.calls) { BaresipService.calls.remove(this) }
     }
 
     open fun connect(uri: String): Boolean {
@@ -234,9 +230,7 @@ open class Call(val callp: Long, val ua: UserAgent, val peerUri: String, val dir
     companion object {
 
         fun calls(): ArrayList<Call> {
-            synchronized(BaresipService.calls) {
-                return ArrayList(BaresipService.calls)
-            }
+            synchronized(BaresipService.calls) { return ArrayList(BaresipService.calls) }
         }
 
         fun ofCallp(callp: Long): Call? {
@@ -256,9 +250,7 @@ open class Call(val callp: Long, val ua: UserAgent, val peerUri: String, val dir
         }
 
         fun inCall(): Boolean {
-            synchronized(BaresipService.calls) {
-                return BaresipService.calls.isNotEmpty()
-            }
+            synchronized(BaresipService.calls) { return BaresipService.calls.isNotEmpty() }
         }
 
         fun hasTelecomCall(): Boolean {