docs: fix example, fixes #173
diff --git a/documentation/pyserial_api.rst b/documentation/pyserial_api.rst
index cec0078..90444df 100644
--- a/documentation/pyserial_api.rst
+++ b/documentation/pyserial_api.rst
@@ -494,6 +494,8 @@
.. versionchanged:: 3.0 renamed from ``applySettingsDict``
+ .. _context-manager:
+
This class can be used as context manager. The serial port is closed when
the context is left.
diff --git a/documentation/shortintro.rst b/documentation/shortintro.rst
index 8f33a68..02385d9 100644
--- a/documentation/shortintro.rst
+++ b/documentation/shortintro.rst
@@ -44,9 +44,9 @@
>>> ser.is_open
False
-Also supported with context manager::
+Also supported with :ref:`context manager <context-manager>`::
- serial.Serial() as ser:
+ with serial.Serial() as ser:
ser.baudrate = 19200
ser.port = 'COM1'
ser.open()