1 files changed, 3 insertions, 3 deletions

diff --git a/lisp/progmodes/python.el b/lisp/progmodes/python.el
index fea52b2f7d6..b5c00385ef3 100644
--- a/lisp/progmodes/python.el
+++ b/lisp/progmodes/python.el
@@ -4156,14 +4156,14 @@ interactively."
   "Send the block at point to inferior Python process.
 The block is delimited by `python-nav-beginning-of-block' and
 `python-nav-end-of-block'.  If optional argument ARG is non-nil
-(interactively, the prefix argument), send the block body without
+\(interactively, the prefix argument), send the block body with
 its header.  If optional argument MSG is non-nil, force display
 of a user-friendly message if there's no process running; this
 always happens interactively."
   (interactive (list current-prefix-arg t))
   (let ((beg (save-excursion
                (when (python-nav-beginning-of-block)
-                 (if (null arg)
+                 (if arg
                      (beginning-of-line)
                    (python-nav-end-of-statement)
                    (beginning-of-line 2)))
@@ -4172,7 +4172,7 @@ always happens interactively."
         (python-indent-guess-indent-offset-verbose nil))
     (if (and beg end)
         (python-shell-send-region beg end nil msg t)
-      (user-error "Can't get code block from current position."))))
+      (user-error "Can't get code block from current position"))))
 
 (defun python-shell-send-buffer (&optional send-main msg)
   "Send the entire buffer to inferior Python process.