diff --git a/main/como/create_context_specific_model.py b/main/como/create_context_specific_model.py
index 209955d5..efa34332 100644
--- a/main/como/create_context_specific_model.py
+++ b/main/como/create_context_specific_model.py
@@ -550,6 +550,7 @@ def _collect_boundary_reactions(path: Path) -> _BoundaryReactions:
     df = _create_df_from_file(path)
     for column in df.columns:
         if column not in [
+            "boundary",
             "reaction",
             "abbreviation",
             "compartment",