diff --git a/chatmastermind/glossary.py b/chatmastermind/glossary.py
index 3737fbb..c109726 100644
--- a/chatmastermind/glossary.py
+++ b/chatmastermind/glossary.py
@@ -47,6 +47,10 @@ class Glossary:
     ID: str | None = None
     file_suffix: ClassVar[str] = '.glo'
 
+    def __post_init__(self) -> None:
+        # FIXME: check for valid languages
+        pass
+
     @classmethod
     def from_file(cls: Type[GlossaryInst], file_path: Path) -> GlossaryInst:
         """