Two nits.
diff --git a/Doc/reference/simple_stmts.rst b/Doc/reference/simple_stmts.rst
index e905ff6..e9be1fd 100644
--- a/Doc/reference/simple_stmts.rst
+++ b/Doc/reference/simple_stmts.rst
@@ -290,7 +290,7 @@
 The extended form, ``assert expression1, expression2``, is equivalent to ::
 
    if __debug__:
-      if not expression1: raise AssertionError, expression2
+      if not expression1: raise AssertionError(expression2)
 
 .. index::
    single: __debug__