diff --git a/volatility3/framework/layers/physical.py b/volatility3/framework/layers/physical.py
index 728fdcf31..5d757f482 100644
--- a/volatility3/framework/layers/physical.py
+++ b/volatility3/framework/layers/physical.py
@@ -113,7 +113,7 @@ class FileLayer(interfaces.layers.DataLayerInterface):
     def maximum_address(self) -> int:
         """Returns the largest available address in the space."""
         # Zero based, so we return the size of the file minus 1
-        if self._maximum_address
+        if self._maximum_address:
             return self._maximum_address
         with self._lock:
             orig = self._file.tell()