diff --git a/sep/sep-016.rst b/sep/sep-016.rst
index 335f09f45..a60ab30dd 100644
--- a/sep/sep-016.rst
+++ b/sep/sep-016.rst
@@ -148,7 +148,7 @@ Another example could be for building URL canonicalizers:
 ::
 
    #!python
-   class CanonializeUrl(LegSpider):
+   class CanonicalizeUrl(LegSpider):
 
        def process_request(self, request):
            curl = canonicalize_url(request.url, rules=self.spider.canonicalization_rules)
diff --git a/sep/sep-018.rst b/sep/sep-018.rst
index fe707923a..fa4f7da82 100644
--- a/sep/sep-018.rst
+++ b/sep/sep-018.rst
@@ -321,7 +321,7 @@ Another example could be for building URL canonicalizers:
 ::
 
    #!python
-   class CanonializeUrl(object):
+   class CanonicalizeUrl(object):
 
        def process_request(self, request, response, spider):
            curl = canonicalize_url(request.url,