diff --git a/cvc5_pythonic_api/cvc5_pythonic.py b/cvc5_pythonic_api/cvc5_pythonic.py
index cbf5c1b..61d1cda 100644
--- a/cvc5_pythonic_api/cvc5_pythonic.py
+++ b/cvc5_pythonic_api/cvc5_pythonic.py
@@ -1004,6 +1004,8 @@ def _to_expr_ref(a, ctx, r=None):
         return StringRef(ast, ctx, r)
     if sort.isSequence():
         return SeqRef(ast, ctx, r)
+    if sort.isFunction():
+        return FuncDeclRef(ast, ctx, r)
     return ExprRef(ast, ctx, r)