diff --git a/src/wuttjamaican/db/util.py b/src/wuttjamaican/db/util.py
index 88362c4..30f9f82 100644
--- a/src/wuttjamaican/db/util.py
+++ b/src/wuttjamaican/db/util.py
@@ -61,10 +61,12 @@ def uuid_column(*args, **kwargs):
     """
     Returns a UUID column for use as a table's primary key.
     """
+    if not args:
+        args = (sa.String(length=32),)
     kwargs.setdefault('primary_key', True)
     kwargs.setdefault('nullable', False)
     kwargs.setdefault('default', make_uuid)
-    return sa.Column(sa.String(length=32), *args, **kwargs)
+    return sa.Column(*args, **kwargs)
 
 
 def uuid_fk_column(target_column, *args, **kwargs):
@@ -74,4 +76,6 @@ def uuid_fk_column(target_column, *args, **kwargs):
     :param target_column: Name of the table column on the remote side,
        e.g. ``'user.uuid'``.
     """
-    return sa.Column(sa.String(length=32), sa.ForeignKey(target_column), *args, **kwargs)
+    if not args:
+        args = (sa.String(length=32), sa.ForeignKey(target_column))
+    return sa.Column(*args, **kwargs)