diff --git a/libraries/entropy/client/interfaces/methods.py b/libraries/entropy/client/interfaces/methods.py
index 7b34a6b72..419d329d8 100644
--- a/libraries/entropy/client/interfaces/methods.py
+++ b/libraries/entropy/client/interfaces/methods.py
@@ -839,9 +839,7 @@ class RepositoryMixin:
             mydata = repo_data.get(repoid)
             if mydata is None:
                 const_debug_write(__name__,
-                    "run_repository_post_branch_upgrade_hooks: repo data N/A" % (
-                        repoid,)
-                )
+                    "run_repository_post_branch_upgrade_hooks: repo data N/A")
                 continue
 
             # check if branch upgrade script exists