diff --git a/android/src/main/kotlin/xyz/nuark/liblinphone_flutter/LiblinphoneFlutterPlugin.kt b/android/src/main/kotlin/xyz/nuark/liblinphone_flutter/LiblinphoneFlutterPlugin.kt
index e8b6031..4b8e5ea 100644
--- a/android/src/main/kotlin/xyz/nuark/liblinphone_flutter/LiblinphoneFlutterPlugin.kt
+++ b/android/src/main/kotlin/xyz/nuark/liblinphone_flutter/LiblinphoneFlutterPlugin.kt
@@ -242,30 +242,30 @@ class LiblinphoneFlutterPlugin : FlutterPlugin, ActivityAware, MethodCallHandler
         }
         return null
     }
+    
+    private fun startCallService() {
+        try {
+            val intent = Intent(activity.applicationContext, LinphoneVoipService::class.java)
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+                activity.startForegroundService(intent)
+            } else {
+                activity.startService(intent)
+            }
+        } catch (e: Exception) {
+            Log.e(TAG, "Failed to start call service: ${e.message}")
+        }
+    }
+
+    private fun stopCallService() {
+        try {
+            val intent = Intent(activity.applicationContext, LinphoneVoipService::class.java)
+            activity.stopService(intent)
+        } catch (e: Exception) {
+            Log.e(TAG, "Failed to stop call service: ${e.message}")
+        }
+    }
 
     companion object {
         const val TAG = "LiblinphoneFlutterPlugin"
-
-        private fun startCallService() {
-            try {
-                val intent = Intent(activity.applicationContext, LinphoneVoipService::class.java)
-                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-                    activity.startForegroundService(intent)
-                } else {
-                    activity.startService(intent)
-                }
-            } catch (e: Exception) {
-                Log.e(TAG, "Failed to start call service: ${e.message}")
-            }
-        }
-
-        private fun stopCallService() {
-            try {
-                val intent = Intent(activity.applicationContext, LinphoneVoipService::class.java)
-                activity.stopService(intent)
-            } catch (e: Exception) {
-                Log.e(TAG, "Failed to stop call service: ${e.message}")
-            }
-        }
     }
 }