diff --git a/gtk2_ardour/ardour3_ui_dark.rc.in b/gtk2_ardour/ardour3_ui_dark.rc.in
index 9c3ee9744c..6763d78bad 100644
--- a/gtk2_ardour/ardour3_ui_dark.rc.in
+++ b/gtk2_ardour/ardour3_ui_dark.rc.in
@@ -1607,6 +1607,8 @@ widget "*TakeSelector" style:highest "medium_entry"
 widget "*RegionSelector" style:highest "medium_entry"
 widget "*SMPTERuler" style:highest "editor_time_ruler"
 widget "*BBTRuler" style:highest "editor_time_ruler"
+widget "*SamplesRuler" style:highest "editor_time_ruler"
+widget "*TimecodeRuler" style:highest "editor_time_ruler"
 widget "*FramesRuler" style:highest "editor_time_ruler"
 widget "*MinSecRuler" style:highest "editor_time_ruler"
 widget "*BaseFrame" style:highest "base_frame"