diff --git a/Lib/test/string_tests.py b/Lib/test/string_tests.py
index c3e53ad..eafc89a 100644
--- a/Lib/test/string_tests.py
+++ b/Lib/test/string_tests.py
@@ -208,6 +208,8 @@
         self.checkequal(['a\x00b', 'c'], 'a\x00b\x00c', 'rsplit', '\x00', 1)
         self.checkequal(['', ''], 'abcd', 'rsplit', 'abcd')
         self.checkequal([u'a b', u'c', u'd'], 'a b c d', 'rsplit', u' ', 2)
+        self.checkequal(['', ' endcase'], '| endcase', 'rsplit', '|')
+        self.checkequal(['', ' endcase'], 'test endcase', 'rsplit', 'test')
 
     def test_strip(self):
         self.checkequal('hello', '   hello   ', 'strip')
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index b3c4a01..636dfcc 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -4294,7 +4294,7 @@
 	} else
 	    i--;
     }
-    if (j >= 0) {
+    if (j >= -1) {
 	SPLIT_INSERT(self->str, 0, j + 1);
     }
     return list;