diff --git a/oslo_config/tests/test_types.py b/oslo_config/tests/test_types.py
index 1d8e160c..3824adb9 100644
--- a/oslo_config/tests/test_types.py
+++ b/oslo_config/tests/test_types.py
@@ -208,6 +208,7 @@ class IntegerTypeTests(TypeTestHelper, unittest.TestCase):
         t(123)
         t(300)
         t(456)
+        self.assertRaises(ValueError, t, 0)
         self.assertRaises(ValueError, t, 457)
 
 
diff --git a/oslo_config/types.py b/oslo_config/types.py
index 9b646e25..ed40dfc2 100644
--- a/oslo_config/types.py
+++ b/oslo_config/types.py
@@ -144,7 +144,7 @@ class Integer(ConfigType):
             else:
                 value = int(value)
 
-        if value:
+        if value is not None:
             self._check_range(value)
 
         return value