diff --git a/runtime/doc/if_pyth.txt b/runtime/doc/if_pyth.txt
index 055a537..29718b2 100644
--- a/runtime/doc/if_pyth.txt
+++ b/runtime/doc/if_pyth.txt
@@ -740,6 +740,11 @@
 3. You undefine PY_NO_RTLD_GLOBAL in auto/config.h after configuration.  This
    may crash Vim though.
 
+							*E880*
+Raising SystemExit exception in python isn't endorsed way to quit vim, use: >
+	:py vim.command("qall!")
+<
+
 							*has-python*
 You can test what Python version is available with: >
 	if has('python')