diff --git a/neon_phal_plugin_device_updater/__init__.py b/neon_phal_plugin_device_updater/__init__.py
index 33ae8b9..1c82e3c 100644
--- a/neon_phal_plugin_device_updater/__init__.py
+++ b/neon_phal_plugin_device_updater/__init__.py
@@ -125,6 +125,7 @@ def _legacy_check_initramfs_update_available(self,
         @return: True if a newer initramfs is available to download
         """
         branch = branch or self._default_branch
+        branch = "master" if branch == "stable" else branch
         if not self.initramfs_url:
             raise RuntimeError("No initramfs_url configured")
         initramfs_url = self.initramfs_url.format(branch)