diff --git a/setools/diff/mlsrules.py b/setools/diff/mlsrules.py
index 6ccbd92..7722251 100644
--- a/setools/diff/mlsrules.py
+++ b/setools/diff/mlsrules.py
@@ -18,8 +18,6 @@
 #
 from collections import namedtuple
 
-from ..policyrep.exception import RuleNotConditional, RuleUseError, TERuleNoFilename
-
 from .descriptors import DiffResultDescriptor
 from .difference import Difference, SymbolWrapper, Wrapper
 from .mls import RangeWrapper