diff --git a/pydruid/utils/filters.py b/pydruid/utils/filters.py
index 2442304f..9e6eb4b1 100644
--- a/pydruid/utils/filters.py
+++ b/pydruid/utils/filters.py
@@ -214,7 +214,7 @@ def __init__(
         ordering="lexicographic",
         extraction_function=None,
     ):
-        if not lower and not upper:
+        if lower is None and upper is None:
             raise ValueError("Must include either lower or upper or both")
         Filter.__init__(
             self,