diff --git a/src/chroot.c b/src/chroot.c
index 885048f1e..b8b72586d 100644
--- a/src/chroot.c
+++ b/src/chroot.c
@@ -207,7 +207,7 @@ Run COMMAND with root directory set to NEWROOT.\n\
       fputs (VERSION_OPTION_DESCRIPTION, stdout);
       fputs (_("\
 \n\
-If no command is given, run '${SHELL} -i' (default: '/bin/sh -i').\n\
+If no command is given, run '"$SHELL" -i' (default: '/bin/sh -i').\n\
 "), stdout);
       emit_ancillary_info (PROGRAM_NAME);
     }