diff --git a/css/leptonChrome.css b/css/leptonChrome.css
index 90a2074..20d7e52 100644
--- a/css/leptonChrome.css
+++ b/css/leptonChrome.css
@@ -5954,7 +5954,8 @@
     list-style-image: url("chrome://browser/skin/window.svg");
   }
 
-  #appMenuRestoreSession {
+  #appMenuRestoreSession,
+  #appMenu-restoreSession {
     list-style-image: url("../icons/restore-session.svg");
   }
 
diff --git a/src/icons/_panel.scss b/src/icons/_panel.scss
index 7420f7c..134724b 100644
--- a/src/icons/_panel.scss
+++ b/src/icons/_panel.scss
@@ -238,7 +238,8 @@ panelMenuBookmarkThisPage[starred] {
 #appMenuRecentlyClosedWindows {
   list-style-image: url("chrome://browser/skin/window.svg");
 }
-#appMenuRestoreSession {
+#appMenuRestoreSession, /* Legacy - v103 */
+#appMenu-restoreSession {
   list-style-image: url("../icons/restore-session.svg");
 }
 #appMenuClearRecentHistory {