diff --git a/config/apache/rewrites/ebooks.conf b/config/apache/rewrites/ebooks.conf
index a1b2280c..617cacaf 100644
--- a/config/apache/rewrites/ebooks.conf
+++ b/config/apache/rewrites/ebooks.conf
@@ -1,16 +1,16 @@
-# Work around some naughty hotlinkers
+# Work around some naughty hotlinkers.
 RewriteCond	%{HTTP_REFERER} !^$
 RewriteCond	%{HTTP_REFERER} ^https?://.*medialibrary.it [NC]
 RewriteRule	^(/ebooks/.+/downloads/|/images/covers/)	/images/do-not-hotlink.jpg [R=301,L,NC]
 
-# Redirect cover images with caching sha's to the root image
-# We do this because some sites like Google cache the cover image path, so changing it results in lots of 404s
+# Redirect cover images with caching SHA's to the root image.
+# We do this because some sites like Google cache the cover image path, so changing it results in lots of 404s.
 RewriteRule	^/images/covers/(.+?)\-[a-z0-9]{8}\-(cover|hero)(@2x)?\.(jpg|avif)$	/images/covers/$1-$2$3.$4
 
-# Rewrite ebook downloads
+# Rewrite ebook downloads.
 RewriteRule	^/ebooks/(.+?)/download$		/ebooks/download.php?url-path=$1 [QSA]
 
-# Misc ebook rewrites
+# Misc ebook rewrites.
 RewriteRule	^/subjects/([^\./]+?)$			/ebooks/index.php?tags[]=$1 [QSA]
 RewriteRule	^/ebooks/([^\./]+?)$			/authors/get.php?url-path=$1 [QSA]
 RewriteRule	^/ebooks/([^\./]+?)/downloads$		/bulk-downloads/get.php?author=$1 [QSA]
@@ -25,7 +25,7 @@ RewriteRule	^/ebooks/(.+?)/delete$			/ebooks/delete.php?url-path=$1 [L]
 RewriteCond	expr "tolower(%{REQUEST_METHOD}) =~ /^post$/"
 RewriteRule	^/ebooks/([^\.]+?)$			/ebooks/post.php?url-path=$1 [L]
 
-# List of specific URL rewrites
+# List of specific URL rewrites.
 RewriteRule	^/contribute/accepted-ebooks/?														/contribute/collections-policy [R=301,L]
 RewriteRule	^/ebooks/aristotle/the-nicomachean-ethics(/?$|/.+?$)											/ebooks/aristotle/nicomachean-ethics$1 [R=301,L]
 RewriteRule	^/ebooks/sir-arthur-conan-doyle(/?$|/.+?$)												/ebooks/arthur-conan-doyle$1 [R=301,L]
@@ -53,11 +53,12 @@ RewriteRule	^/ebooks/samuel-richardson/clarissa-harlowe(/?$|/.+?$)											/eb
 RewriteRule	^/ebooks/tanizaki-junichiro/short-fiction/iwado-z-tamotsu(/?$|/.+?$)									/ebooks/tanizaki-junichiro/short-fiction/ijichi-sumimasa_iwado-z-tamotsu$1 [R=301,L]
 RewriteRule	^/ebooks/george-bernard-shaw/you-can-never-tell(/?$|/.+?$)										/ebooks/george-bernard-shaw/you-never-can-tell$1 [R=301,L]
 
-# Rewrite ebooks taken down due to copyright clarifications
+# Rewrite ebooks taken down due to copyright clarifications.
 RewriteRule	^/ebooks/jules-verne/twenty-thousand-leagues-under-the-seas/f-p-walter.*								- [R=451,L]
 
-# Prevent this rule from firing if we're getting a distribution file
+# Prevent this rule from firing if we're getting a distribution file.
 RewriteCond	%{REQUEST_FILENAME}		!^/ebooks/.+?/downloads/.+$
 RewriteCond	%{REQUEST_FILENAME}		!^/ebooks/.+?/text.*$
 RewriteCond	%{REQUEST_FILENAME}		!^/ebooks/.+?/projects.*$
-RewriteRule	^/ebooks/([^\.]+?)$		/ebooks/get.php?url-path=$1
+# Sometimes links in the wild incorrectly include spaces, so use the `B` flag to return a 404 instead of a 403.
+RewriteRule	^/ebooks/([^\.]+?)$		/ebooks/get.php?url-path=$1 [B]