diff --git a/stdlib/2/unittest.pyi b/stdlib/2/unittest.pyi
index 36be7891c..163ccceee 100644
--- a/stdlib/2/unittest.pyi
+++ b/stdlib/2/unittest.pyi
@@ -163,10 +163,10 @@ class SkipTest(Exception):
     ...
 
 # TODO precise types
-def skipUnless(condition: Any, reason: str) -> Any: ...
-def skipIf(condition: Any, reason: str) -> Any: ...
+def skipUnless(condition: Any, reason: Union[str, unicode]) -> Any: ...
+def skipIf(condition: Any, reason: Union[str, unicode]) -> Any: ...
 def expectedFailure(func: _FT) -> _FT: ...
-def skip(reason: str) -> Any: ...
+def skip(reason: Union[str, unicode]) -> Any: ...
 
 def main(module: str = ..., defaultTest: str = ...,
          argv: List[str] = ..., testRunner: Any = ...,