--- busybox.orig/shell/ash.c
+++ busybox/shell/ash.c
@@ -1748,7 +1748,7 @@
 	{ VSTRFIXED|VTEXTFIXED|VUNSET, "MAIL\0"    , changemail      },
 	{ VSTRFIXED|VTEXTFIXED|VUNSET, "MAILPATH\0", changemail      },
 #endif
-	{ VSTRFIXED|VTEXTFIXED       , bb_PATH_root_path, changepath },
+	{ VSTRFIXED|VTEXTFIXED|VEXPORT, bb_PATH_root_path, changepath },
 	{ VSTRFIXED|VTEXTFIXED       , "PS1=$ "    , NULL            },
 	{ VSTRFIXED|VTEXTFIXED       , "PS2=> "    , NULL            },
 	{ VSTRFIXED|VTEXTFIXED       , "PS4=+ "    , NULL            },