diff --git a/doc/users/whats_new.rst b/doc/users/whats_new.rst
index 1740f66c9ff..cae3255e183 100644
--- a/doc/users/whats_new.rst
+++ b/doc/users/whats_new.rst
@@ -147,7 +147,7 @@ unrelated to style.  These parameters include::
   'interactive', 'backend', 'backend.qt4', 'webagg.port',
   'webagg.port_retries', 'webagg.open_in_browser', 'backend_fallback',
   'toolbar', 'timezone', 'datapath', 'figure.max_open_warning',
-  'savefig.directory', 'tk.window_focus', 'hardcopy.docstring'
+  'savefig.directory', 'tk.window_focus', 'docstring.hardcopy'
 
 
 Change in default font
diff --git a/lib/matplotlib/style/core.py b/lib/matplotlib/style/core.py
index 075010e212c..b1bc691d405 100644
--- a/lib/matplotlib/style/core.py
+++ b/lib/matplotlib/style/core.py
@@ -40,7 +40,7 @@
     'interactive', 'backend', 'backend.qt4', 'webagg.port',
     'webagg.port_retries', 'webagg.open_in_browser', 'backend_fallback',
     'toolbar', 'timezone', 'datapath', 'figure.max_open_warning',
-    'savefig.directory', 'tk.window_focus', 'hardcopy.docstring'])
+    'savefig.directory', 'tk.window_focus', 'docstring.hardcopy'])
 
 
 def _remove_blacklisted_style_params(d, warn=True):