diff --git a/gtk2_ardour/ardour3_widget_list.rc b/gtk2_ardour/ardour3_widget_list.rc
index cc45f52c79..3df0f23c0a 100644
--- a/gtk2_ardour/ardour3_widget_list.rc
+++ b/gtk2_ardour/ardour3_widget_list.rc
@@ -121,11 +121,11 @@ widget "*WarningMessage" style:highest "warning_message"
 
 widget "*big clock" style:highest "monospace massive_text"
 widget "*selection clock" style:highest "small_text"
-widget "*punch clock" style:highest "small_text"
+widget "*punch clock" style:highest "small_mono_text"
 widget "*transport clock" style:highest "large_bold_mono_text"
 widget "*secondary clock" style:highest "large_bold_mono_text"
-widget "*transport delta clock" style:highest "large_bold_text"
-widget "*secondary delta clock" style:highest "large_bold_text"
+widget "*transport delta clock" style:highest "large_bold_mono_text"
+widget "*secondary delta clock" style:highest "large_bold_mono_text"
 widget "*silence duration clock" style:highest "medium_text"
 widget "*edit point clock" style:highest "medium_text"
 widget "*nudge clock" style:highest "medium_bold_text"