diff --git a/USER_MANUAL.html b/USER_MANUAL.html
index f185fcea..ecf1623d 100644
--- a/USER_MANUAL.html
+++ b/USER_MANUAL.html
@@ -613,6 +613,7 @@ FMA             -       Supports FMA extensions using YMM state</code></pre>
 <li>Hamlib: set mode before frequency to avoid accidental offsetting. (PR #442, #452)</li>
 <li>Fix audio dialog plot display and lockup issues. (PR #450)</li>
 <li>Disable PTT and Voice Keyer buttons if only RX devices are configured. (PR #449)</li>
+<li>Fix Linux display bugs when switching between dark and light mode. (PR #454)</li>
 </ul></li>
 <li>Enhancements:
 <ul>
diff --git a/USER_MANUAL.pdf b/USER_MANUAL.pdf
index 62258e12..a880d6de 100644
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