diff --git a/app/src/main/kotlin/com/tutpro/baresip/MainActivity.kt b/app/src/main/kotlin/com/tutpro/baresip/MainActivity.kt
index b614e8b7..1d7685bf 100644
--- a/app/src/main/kotlin/com/tutpro/baresip/MainActivity.kt
+++ b/app/src/main/kotlin/com/tutpro/baresip/MainActivity.kt
@@ -1018,7 +1018,7 @@ class MainActivity : AppCompatActivity() {
     }
 
     private fun askPassword(title: String, ua: UserAgent? = null) {
-        val builder = AlertDialog.Builder(this)
+        val builder = AlertDialog.Builder(this, R.style.AlertDialogTheme)
         val layout = LayoutInflater.from(this)
                 .inflate(R.layout.password_dialog, findViewById(android.R.id.content) as ViewGroup,
                         false)