diff --git a/gtk2_ardour/editor_drag.cc b/gtk2_ardour/editor_drag.cc
index 53fd5d33cc..db63522c28 100644
--- a/gtk2_ardour/editor_drag.cc
+++ b/gtk2_ardour/editor_drag.cc
@@ -518,7 +518,7 @@ Drag::motion_handler (GdkEvent* event, bool from_autoscroll)
 			}
 
 			if (!from_autoscroll) {
-				_editor->maybe_autoscroll (true, allow_vertical_autoscroll (), false);
+				_editor->maybe_autoscroll (allow_horizontal_autoscroll (), allow_vertical_autoscroll (), false);
 			}
 
 			if (!_editor->autoscroll_active() || from_autoscroll) {
diff --git a/gtk2_ardour/editor_drag.h b/gtk2_ardour/editor_drag.h
index 7fe7fe4819..dc567d3adf 100644
--- a/gtk2_ardour/editor_drag.h
+++ b/gtk2_ardour/editor_drag.h
@@ -220,6 +220,10 @@ public:
 		return true;
 	}
 
+	virtual bool allow_horizontal_autoscroll () const {
+		return true;
+	}
+
 	/** @return true if x movement matters to this drag */
 	virtual bool x_movement_matters () const {
 		return true;
@@ -926,6 +930,10 @@ public:
 		return false;
 	}
 
+	bool allow_horizontal_autoscroll () const {
+		return false;
+	}
+
 	bool y_movement_matters () const {
 		return false;
 	}
@@ -960,6 +968,10 @@ public:
 		return false;
 	}
 
+	bool allow_horizontal_autoscroll () const {
+		return false;
+	}
+
 	bool y_movement_matters () const {
 		return false;
 	}