diff --git a/mixpanel/flags/local_feature_flags.py b/mixpanel/flags/local_feature_flags.py
index 7409e1b..140f849 100644
--- a/mixpanel/flags/local_feature_flags.py
+++ b/mixpanel/flags/local_feature_flags.py
@@ -233,7 +233,7 @@ def get_variant(
             logger.warning("Cannot find flag definition for key: '%s'", flag_key)
             return fallback_value.as_fallback(FallbackReason.flag_not_found())
 
-        if not (context_value := context.get(flag_definition.context)):
+        if (context_value := context.get(flag_definition.context)) is None:
             logger.warning(
                 "The rollout context, '%s' for flag, '%s' is not present in the supplied context dictionary",
                 flag_definition.context,
diff --git a/mixpanel/flags/test_local_feature_flags.py b/mixpanel/flags/test_local_feature_flags.py
index 6f5554b..eba5eb0 100644
--- a/mixpanel/flags/test_local_feature_flags.py
+++ b/mixpanel/flags/test_local_feature_flags.py
@@ -832,6 +832,30 @@ async def test_get_variant_tags_missing_context(self):
         assert result.fallback_reason.kind == "MISSING_CONTEXT_KEY"
         assert result.fallback_reason.message == "distinct_id"
 
+    @respx.mock
+    async def test_get_variant_evaluates_zero_context_value(self):
+        flag = create_test_flag(context="account_age_days")
+        await self.setup_flags([flag])
+        fallback = SelectedVariant(variant_value="fb")
+        result = self._flags.get_variant(
+            TEST_FLAG_KEY,
+            fallback,
+            {"distinct_id": DISTINCT_ID, "account_age_days": 0},
+        )
+        assert result.variant_source == VariantSource.LOCAL
+
+    @respx.mock
+    async def test_get_variant_evaluates_false_context_value(self):
+        flag = create_test_flag(context="is_subscriber")
+        await self.setup_flags([flag])
+        fallback = SelectedVariant(variant_value="fb")
+        result = self._flags.get_variant(
+            TEST_FLAG_KEY,
+            fallback,
+            {"distinct_id": DISTINCT_ID, "is_subscriber": False},
+        )
+        assert result.variant_source == VariantSource.LOCAL
+
     @respx.mock
     async def test_get_variant_tags_no_rollout_match(self):
         flag = create_test_flag(rollout_percentage=0.0)