diff --git a/src/codemagic/tools/app_store_connect.py b/src/codemagic/tools/app_store_connect.py
index eeee9d21..f3c1b67a 100755
--- a/src/codemagic/tools/app_store_connect.py
+++ b/src/codemagic/tools/app_store_connect.py
@@ -535,7 +535,7 @@ def register_devices_from_file(
                 continue
 
             if udid_pattern.match(device_udid) is None:
-                self.logger.warning(Colors.YELLOW(f'Invalid device UDID on line {line}: {device_udid!r}'))
+                self.logger.warning(Colors.YELLOW(f'Invalid device UDID on line {line + 1}: {device_udid!r}'))
                 continue
 
             try:
@@ -551,6 +551,8 @@ def register_devices_from_file(
             else:
                 registered_devices.append(device)
 
+            self.echo('') if should_print else None
+
         return registered_devices
 
     @cli.action(