diff --git a/libexec/rc/rc.d/growfs_fstab b/libexec/rc/rc.d/growfs_fstab
index 8ad34f452ce0..c51f0dd6f3de 100755
--- a/libexec/rc/rc.d/growfs_fstab
+++ b/libexec/rc/rc.d/growfs_fstab
@@ -1,67 +1,62 @@
 #!/bin/sh
 #
 # Copyright 2022 Michael J. Karels
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions
 # are met:
 # 1. Redistributions of source code must retain the above copyright
 #    notice, this list of conditions and the following disclaimer.
 # 2. Redistributions in binary form must reproduce the above copyright
 #    notice, this list of conditions and the following disclaimer in the
 #    documentation and/or other materials provided with the distribution.
 #
 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 # ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 # SUCH DAMAGE.
 #
 # $FreeBSD$
 #
 
 # PROVIDE: growfs_fstab
 # REQUIRE: growfs root
 # KEYWORD: firstboot
 
 # If the growfs script added a swap partition, then add a swap entry
 # to /etc/fstab if none exists, and add as dumpdev.
 
 . /etc/rc.subr
 
 name="growfs_fstab"
 desc="Add new swap partition to /etc/fstab"
 start_cmd="growfs_fstab_start"
 stop_cmd=":"
 rcvar="growfs_enable"
 
 growfs_fstab_start()
 {
 	if kenv -q growfs_swap_pdev >/dev/null
 	then
 		if awk '
 			/^#/ { next }
 			$3 == "swap" { exit 1 }
 		    ' < /etc/fstab
 		then
 			printf "/dev/label/growfs_swap\tnone\t\tswap\tsw\t\t0\t0\n" >>/etc/fstab
-
-			case "$dumpdev" in
-			[Aa][Uu][Tt][Oo])
-				dumpon $dumpon_flags /dev/label/growfs_swap
-				;;
-			*)
-				;;
-			esac
+			printf '# Set dumpdev to "AUTO" to enable crash dumps, "NO" to disable\n' >>/etc/rc.conf
+			printf 'dumpdev="AUTO"\n' >>/etc/rc.conf
+			dumpon $dumpon_flags /dev/label/growfs_swap
 		fi
 	fi
 }
 
 load_rc_config $name
 run_rc_command "$1"