diff --git a/src/lib/commands/navi.c b/src/lib/commands/navi.c
index b15f1d53..4330f90c 100644
--- a/src/lib/commands/navi.c
+++ b/src/lib/commands/navi.c
@@ -176,7 +176,7 @@ navi(void)
 	    shp_list(&ship_list);
 	    break;
 	case 'm':
-	    stopping |= shp_sweep(&ship_list, 1, 0, player->cnum);
+	    stopping |= shp_sweep(&ship_list, 1, 1, player->cnum);
 	    break;
 	case 'r':
 	    radar(EF_SHIP);