diff --git a/extensions/file_tools/gth-curve-editor.c b/extensions/file_tools/gth-curve-editor.c
index 49987117..97fe2b27 100644
--- a/extensions/file_tools/gth-curve-editor.c
+++ b/extensions/file_tools/gth-curve-editor.c
@@ -1003,6 +1003,7 @@ gth_curve_editor_init (GthCurveEditor *self)
 				| GDK_POINTER_MOTION_HINT_MASK
 				| GDK_ENTER_NOTIFY_MASK
 				| GDK_LEAVE_NOTIFY_MASK
+				| GDK_SCROLL_MASK
 				| GDK_STRUCTURE_MASK));
 	gtk_widget_show (self->priv->view);
 	gtk_container_add (GTK_CONTAINER (view_container), self->priv->view);
diff --git a/pix/gth-histogram-view.c b/pix/gth-histogram-view.c
index 988805f9..94072a65 100644
--- a/pix/gth-histogram-view.c
+++ b/pix/gth-histogram-view.c
@@ -936,7 +936,7 @@ gth_histogram_view_init (GthHistogramView *self)
 	gtk_widget_show (view_container);
 
 	self->priv->view = gtk_drawing_area_new ();
-	gtk_widget_add_events (self->priv->view, GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK | GDK_STRUCTURE_MASK);
+	gtk_widget_add_events (self->priv->view, GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK | GDK_STRUCTURE_MASK | GDK_SCROLL_MASK);
 	gtk_widget_show (self->priv->view);
 	gtk_container_add (GTK_CONTAINER (view_container), self->priv->view);