diff --git a/src/fix.py b/src/fix.py
index 229049aa9..52e4f581d 100644
--- a/src/fix.py
+++ b/src/fix.py
@@ -127,6 +127,8 @@ def all(p, seq):
     return True
 
 def rsplit(s, sep=None, maxsplit=-1):
+    if sep is not None:
+        sep = sep[::-1]
     L = s[::-1].split(sep, maxsplit)
     L.reverse()
     return [s[::-1] for s in L]
diff --git a/test/test_fix.py b/test/test_fix.py
index 92fcb3e7f..e65a349ea 100644
--- a/test/test_fix.py
+++ b/test/test_fix.py
@@ -94,6 +94,7 @@ class FunctionsTest(unittest.TestCase):
                          ['foo bar', 'baz']) 
         self.assertEqual(rsplit('foo        bar baz', maxsplit=1),
                          ['foo        bar', 'baz'])
+        self.assertEqual(rsplit('foobarbaz', 'bar'), ['foo', 'baz'])
 
 
 # vim:set shiftwidth=4 tabstop=8 expandtab textwidth=78: