diff --git a/src/keyevents.c b/src/keyevents.c
index 8937e913a4b1104d0de048d9b31a4e2e5703bf6c..3166e9a60755d07509e40079960de081c1edd730 100644
--- a/src/keyevents.c
+++ b/src/keyevents.c
@@ -261,11 +261,13 @@ void feh_event_handle_keypress(XEvent * ev)
 		/* erroneously recognized as '+' in the *kbuf switch. Work around this. */
 		len = 0;
 		winwid->zoom = winwid->zoom * 1.25;
+		winwidget_sanitise_offsets(winwid);
 		winwidget_render_image(winwid, 0, 0);
 		break;
 	case XK_KP_Subtract:
 		len = 0;
 		winwid->zoom = winwid->zoom * 0.75;
+		winwidget_sanitise_offsets(winwid);
 		winwidget_render_image(winwid, 0, 0);
 		break;
 	case XK_KP_Multiply: