diff --git a/docs/configuration.rst b/docs/configuration.rst
index 14d8759f..cf9356cf 100644
--- a/docs/configuration.rst
+++ b/docs/configuration.rst
@@ -16,5 +16,5 @@ Option                                 Default
 ``BOOTSTRAP_USE_MINIFIED``             ``True``                                                 Whether or not to use the minified versions of the css/js files.
 ``BOOTSTRAP_SERVE_LOCAL``              ``False``                                                If ``True``, Bootstrap resources will be served from the local app instance every time. See :doc:`cdn` for details.
 ``BOOTSTRAP_CDN_FORCE _SSL``           ``True``                                                 If a CDN resource url starts with ``//``, prepend ``'https:'`` to it.
-``BOOTSTRAP_QUERYSTRING_REVVING``      ``True``                                                 If ``True``, will apppend a querystring with the current version to all static resources served locally. This ensures that upon upgrading Flask-Bootstrap, these resources are refreshed.
+``BOOTSTRAP_QUERYSTRING_REVVING``      ``True``                                                 If ``True``, will append a querystring with the current version to all static resources served locally. This ensures that upon upgrading Flask-Bootstrap, these resources are refreshed.
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