It is really a suffix :-)
diff --git a/Doc/library/2to3.rst b/Doc/library/2to3.rst
index de31251..555675c 100644
--- a/Doc/library/2to3.rst
+++ b/Doc/library/2to3.rst
@@ -230,7 +230,7 @@
 
 .. 2to3fixer:: long
 
-   Strips the ``L`` prefix on long literals and renames :class:`long` to
+   Strips the ``L`` suffix on long literals and renames :class:`long` to
    :class:`int`.
 
 .. 2to3fixer:: map