diff --git a/options.xhtml b/options.xhtml
index 891343b54..5e369ad14 100644
--- a/options.xhtml
+++ b/options.xhtml
@@ -21905,7 +21905,7 @@ attribute set of (Firefox preference (int, bool, string, and also attrs, list, f
 <p>Custom Firefox user chrome CSS.</p>
 
 <p><span class="emphasis"><em>Type:</em></span>
-strings concatenated with “\n”</p>
+strings concatenated with “\n” or absolute path</p>
 
 <p><span class="emphasis"><em>Default:</em></span>
 <code class="literal">&quot;&quot;</code></p>
@@ -21944,7 +21944,7 @@ strings concatenated with “\n”</p>
 <p>Custom Firefox user content CSS.</p>
 
 <p><span class="emphasis"><em>Type:</em></span>
-strings concatenated with “\n”</p>
+strings concatenated with “\n” or absolute path</p>
 
 <p><span class="emphasis"><em>Default:</em></span>
 <code class="literal">&quot;&quot;</code></p>
@@ -23436,7 +23436,7 @@ attribute set of (Floorp preference (int, bool, string, and also attrs, list, fl
 <p>Custom Floorp user chrome CSS.</p>
 
 <p><span class="emphasis"><em>Type:</em></span>
-strings concatenated with “\n”</p>
+strings concatenated with “\n” or absolute path</p>
 
 <p><span class="emphasis"><em>Default:</em></span>
 <code class="literal">&quot;&quot;</code></p>
@@ -23475,7 +23475,7 @@ strings concatenated with “\n”</p>
 <p>Custom Floorp user content CSS.</p>
 
 <p><span class="emphasis"><em>Type:</em></span>
-strings concatenated with “\n”</p>
+strings concatenated with “\n” or absolute path</p>
 
 <p><span class="emphasis"><em>Default:</em></span>
 <code class="literal">&quot;&quot;</code></p>