diff --git a/tests/policy.py b/tests/policy.py
index 8fc2ef7..98133b7 100644
--- a/tests/policy.py
+++ b/tests/policy.py
@@ -146,9 +146,9 @@
     # DoNotMatchPrefix have the attribute Attr.
     # For example assert that all types in /sys, and not in /sys/kernel/debugfs
     # have the sysfs_type attribute.
-    def AssertPathTypesHaveAttr(self, MatchPrefix, DoNotMatchPrefix, Attr):
+    def AssertPathTypesHaveAttr(self, MatchPrefix, DoNotMatchPrefix, Attr, ExcludedTypes = []):
         # Query policy for the types associated with Attr
-        TypesPol = self.QueryTypeAttribute(Attr, True)
+        TypesPol = self.QueryTypeAttribute(Attr, True) | set(ExcludedTypes)
         # Search file_contexts to find paths/types that should be associated with
         # Attr.
         PathTypes = self.__GetTypesAndFilesByFilePathPrefix(MatchPrefix, DoNotMatchPrefix)