diff --git a/chimera/chimera.py b/chimera/chimera.py
index 2e432d9..7a6b377 100644
--- a/chimera/chimera.py
+++ b/chimera/chimera.py
@@ -262,6 +262,8 @@ def _prepare_templates(self, fssubj_dir:str = None):
                     # Select the files that contain the atlas names
                     ctx_parc_lh = cltmisc._filter_by_substring(ctx_parc_lh, atlas_names, boolcase=False)
                     ctx_parc_rh = cltmisc._filter_by_substring(ctx_parc_rh, atlas_names, boolcase=False)
+                    ctx_parc_lh.sort()
+                    ctx_parc_rh.sort()
                     
                     ctx_parc_lh_annot = []
                     ctx_parc_rh_annot = []