diff --git a/src/stack_pr/cli.py b/src/stack_pr/cli.py
index 4eb82f8..d6d7488 100755
--- a/src/stack_pr/cli.py
+++ b/src/stack_pr/cli.py
@@ -1039,12 +1039,12 @@ def delete_remote_branches(st: List[StackEntry], remote: str, verbose: bool):
     log(h("Deleting remote branches"), level=1)
     run_shell_command(["git", "fetch", "--prune", remote], quiet=not verbose)
 
-    username = get_gh_username()
+    branch_name_base = get_branch_name_base(branch_name_template)
     refs = get_command_output(
         [
             "git",
             "for-each-ref",
-            f"refs/remotes/{remote}/{username}/stack",
+            f"refs/remotes/{remote}/{branch_name_base}",
             "--format=%(refname)",
         ]
     ).split()