diff --git a/Doc/library/unittest.rst b/Doc/library/unittest.rst
index 3c0b96f..15765f5 100644
--- a/Doc/library/unittest.rst
+++ b/Doc/library/unittest.rst
@@ -1138,7 +1138,7 @@
       Test that the multiline string *first* is equal to the string *second*.
       When not equal a diff of the two strings highlighting the differences
       will be included in the error message. This method is used by default
-      when comparing strings with :meth:`assertEqual`.
+      when comparing Unicode strings with :meth:`assertEqual`.
 
       .. versionadded:: 2.7