diff --git a/gtk2_ardour/themes/dark-ardour.colors b/gtk2_ardour/themes/dark-ardour.colors
index 2a72b00774..ed41e5b5c9 100644
--- a/gtk2_ardour/themes/dark-ardour.colors
+++ b/gtk2_ardour/themes/dark-ardour.colors
@@ -175,7 +175,7 @@
     <ColorAlias name="gtk_processor_postfader_frame" alias="widget:green"/>
     <ColorAlias name="gtk_processor_prefader" alias="widget:ruddy"/>
     <ColorAlias name="gtk_processor_prefader_frame" alias="widget:ruddy"/>
-    <ColorAlias name="gtk_scrollbar_slider" alias="neutral:midground"/>
+    <ColorAlias name="gtk_scrollbar_slider" alias="neutral:background2"/>
     <ColorAlias name="gtk_send_bg" alias="theme:bg1"/>
     <ColorAlias name="gtk_send_fg" alias="widget:blue"/>
     <ColorAlias name="gtk_solo" alias="alert:green"/>