diff --git a/clang/docs/ClangFormat.rst b/clang/docs/ClangFormat.rst
--- a/clang/docs/ClangFormat.rst
+++ b/clang/docs/ClangFormat.rst
@@ -145,8 +145,13 @@
 
 .. code-block:: vim
 
-  map <C-K> :pyf <path-to-this-file>/clang-format.py<cr>
-  imap <C-K> <c-o>:pyf <path-to-this-file>/clang-format.py<cr>
+  if has('python')
+    map <C-K> :pyf <path-to-this-file>/clang-format.py<cr>
+    imap <C-K> <c-o>:pyf <path-to-this-file>/clang-format.py<cr>
+  elseif has('python3')
+    map <C-K> :py3f <path-to-this-file>/clang-format.py<cr>
+    imap <C-K> <c-o>:py3f <path-to-this-file>/clang-format.py<cr>
+  endif
 
 The first line enables :program:`clang-format` for NORMAL and VISUAL mode, the
 second line adds support for INSERT mode. Change "C-K" to another binding if