diff --git a/app/src/main/kotlin/com/tutpro/baresip/BaresipService.kt b/app/src/main/kotlin/com/tutpro/baresip/BaresipService.kt
index 0309f30a..b8720b08 100644
--- a/app/src/main/kotlin/com/tutpro/baresip/BaresipService.kt
+++ b/app/src/main/kotlin/com/tutpro/baresip/BaresipService.kt
@@ -1557,7 +1557,7 @@ class BaresipService: Service() {
         }
     }
 
-    external fun baresipStart(
+    private external fun baresipStart(
         path: String,
         addresses: String,
         logLevel: Int,