diff --git a/gtk2_ardour/ergonomic-us.bindings.in b/gtk2_ardour/ergonomic-us.bindings.in
index 9c7efb9b99..c340adbb03 100644
--- a/gtk2_ardour/ergonomic-us.bindings.in
+++ b/gtk2_ardour/ergonomic-us.bindings.in
@@ -163,7 +163,6 @@
 ; (gtk_accel_path "<Actions>/Snap/snap-to-eighths" "")
 (gtk_accel_path "<Actions>/Editor/select-all-after-playhead" "<@TERTIARY@><@PRIMARY@>p")
 (gtk_accel_path "<Actions>/Common/ToggleMaximalEditor" "F11")
-(gtk_accel_path "<Actions>/Common/ToggleMaximalMixer" "F12")
 ; (gtk_accel_path "<Actions>/RegionList/SortBySourceFileLength" "")
 ; (gtk_accel_path "<Actions>/Editor/Timecode" "")
 ; (gtk_accel_path "<Actions>/Transport/PlaySelection" "")