diff --git a/sherlock/sites.py b/sherlock/sites.py
index 90c6d11b..1d096280 100644
--- a/sherlock/sites.py
+++ b/sherlock/sites.py
@@ -40,6 +40,7 @@ class SiteInformation:
                                          be needed by the detection method,
                                          but it is only recorded in this
                                          object for future use.
+        is_nsfw                -- Boolean indicating if site is Not Safe For Work.
 
         Return Value:
         Nothing.