diff --git a/tests/test-status.t b/tests/test-status.t
--- a/tests/test-status.t
+++ b/tests/test-status.t
@@ -465,12 +465,12 @@ hg status of binary file starting with '
 
   $ hg init repo5
   $ cd repo5
-  >>> open("010a", "wb").write("\1\nfoo")
+  >>> open("010a", r"wb").write(b"\1\nfoo")
   $ hg ci -q -A -m 'initial checkin'
   $ hg status -A
   C 010a
 
-  >>> open("010a", "wb").write("\1\nbar")
+  >>> open("010a", r"wb").write(b"\1\nbar")
   $ hg status -A
   M 010a
   $ hg ci -q -m 'modify 010a'