diff --git a/desktop-shell/shell.c b/desktop-shell/shell.c
index eeb24aa8..f3ff0a1d 100644
--- a/desktop-shell/shell.c
+++ b/desktop-shell/shell.c
@@ -982,8 +982,9 @@ touch_move_grab_motion(struct weston_touch_grab *grab,
 
 	es = weston_desktop_surface_get_surface(shsurf->desktop_surface);
 
-	pos.c.x = (int)(pos.c.x + wl_fixed_to_double(move->dx));
-	pos.c.y = (int)(pos.c.y + wl_fixed_to_double(move->dy));
+	pos.c.x = pos.c.x + wl_fixed_to_double(move->dx);
+	pos.c.y = pos.c.y + wl_fixed_to_double(move->dy);
+	pos.c = weston_coord_truncate(pos.c);
 	weston_view_set_position(shsurf->view, pos);
 
 	weston_compositor_schedule_repaint(es->compositor);
diff --git a/include/libweston/matrix.h b/include/libweston/matrix.h
index 842d9688..7b4adee1 100644
--- a/include/libweston/matrix.h
+++ b/include/libweston/matrix.h
@@ -166,6 +166,12 @@ weston_coord_sub(struct weston_coord a, struct weston_coord b)
 	return weston_coord(a.x - b.x, a.y - b.y);
 }
 
+static inline struct weston_coord __attribute__ ((warn_unused_result))
+weston_coord_truncate(struct weston_coord in)
+{
+	return (struct weston_coord){ (int)in.x, (int)in.y };
+}
+
 #ifdef  __cplusplus
 }
 #endif
diff --git a/kiosk-shell/kiosk-shell-grab.c b/kiosk-shell/kiosk-shell-grab.c
index 8193b250..73bf44b1 100644
--- a/kiosk-shell/kiosk-shell-grab.c
+++ b/kiosk-shell/kiosk-shell-grab.c
@@ -171,10 +171,11 @@ touch_move_grab_motion(struct weston_touch_grab *touch_grab,
 
 	surface = weston_desktop_surface_get_surface(shsurf->desktop_surface);
 
-	dx = (int)(touch->grab_pos.c.x + wl_fixed_to_double(shgrab->dx));
-	dy = (int)(touch->grab_pos.c.y + wl_fixed_to_double(shgrab->dy));
+	dx = touch->grab_pos.c.x + wl_fixed_to_double(shgrab->dx);
+	dy = touch->grab_pos.c.y + wl_fixed_to_double(shgrab->dy);
 
 	pos.c = weston_coord(dx, dy);
+	pos.c = weston_coord_truncate(pos.c);
 	weston_view_set_position(shsurf->view, pos);
 
 	weston_compositor_schedule_repaint(surface->compositor);