diff --git a/libs/gtkmm2ext/gtkmm2ext/keyboard.h b/libs/gtkmm2ext/gtkmm2ext/keyboard.h
index 9c2fd71fff..156bb2f987 100644
--- a/libs/gtkmm2ext/gtkmm2ext/keyboard.h
+++ b/libs/gtkmm2ext/gtkmm2ext/keyboard.h
@@ -69,7 +69,6 @@ public:
 	static uint32_t RangeSelectModifier;
 	static uint32_t GainFineScaleModifier;
 	static uint32_t GainExtraFineScaleModifier;
-	static uint32_t UseSelectionModifier;
 
 	// Modifiers for scroll wheel
 	static uint32_t ScrollZoomVerticalModifier;
diff --git a/libs/gtkmm2ext/keyboard.cc b/libs/gtkmm2ext/keyboard.cc
index 77ddd3770a..bf0a4a47c5 100644
--- a/libs/gtkmm2ext/keyboard.cc
+++ b/libs/gtkmm2ext/keyboard.cc
@@ -237,7 +237,6 @@ Keyboard::format_modifier (uint32_t mod)
 
 guint Keyboard::GainFineScaleModifier      = Keyboard::PrimaryModifier;
 guint Keyboard::GainExtraFineScaleModifier = Keyboard::SecondaryModifier;
-guint Keyboard::UseSelectionModifier = Keyboard::Level4Modifier;
 
 guint Keyboard::ScrollZoomVerticalModifier   = Keyboard::SecondaryModifier;
 guint Keyboard::ScrollZoomHorizontalModifier = Keyboard::PrimaryModifier;