diff --git a/docs/conf.py b/docs/conf.py
index 61d5b9600..80b8e3e90 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -246,4 +246,7 @@ coverage_ignore_pyobjects = [
     # Base classes of downloader middlewares are implementation details that
     # are not meant for users.
     r'^scrapy\.downloadermiddlewares\.\w*?\.Base\w*?Middleware',
+
+    # Private exception used by the command-line interface implementation.
+    r'^scrapy\.exceptions\.UsageError',
 ]