diff --git a/0278-squish-don-t-dup-rhgb-quiet-check-mtimes.patch b/0278-squish-don-t-dup-rhgb-quiet-check-mtimes.patch
new file mode 100644
index 0000000..013b915
--- /dev/null
+++ b/0278-squish-don-t-dup-rhgb-quiet-check-mtimes.patch
@@ -0,0 +1,35 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Robbie Harwood <rharwood@redhat.com>
+Date: Wed, 17 Aug 2022 10:26:07 -0400
+Subject: [PATCH] squish: don't dup rhgb quiet, check mtimes
+
+Signed-off-by: Robbie Harwood <rharwood@redhat.com>
+---
+ util/grub.d/10_linux.in | 14 ++++++++++----
+ 1 file changed, 10 insertions(+), 4 deletions(-)
+
+diff --git a/util/grub.d/10_linux.in b/util/grub.d/10_linux.in
+index 950a92f5e8..03f091a4dc 100644
+--- a/util/grub.d/10_linux.in
++++ b/util/grub.d/10_linux.in
+@@ -161,10 +161,16 @@ update_bls_cmdline()
+     local cmdline="root=${LINUX_ROOT_DEVICE} ro ${GRUB_CMDLINE_LINUX} ${GRUB_CMDLINE_LINUX_DEFAULT}"
+     local -a files=($(get_sorted_bls))
+ 
+-    if [[ ! -f /etc/kernel/cmdline ]]; then
+-	# anaconda has the correct information to do this during install;
+-	# afterward, grubby will take care of syncing on updates.
+-	echo "$cmdline rhgb quiet" > /etc/kernel/cmdline
++    if [[ ! -f /etc/kernel/cmdline ]] ||
++	   [[ /etc/kernel/cmdline -ot /etc/default/grub ]]; then
++	# anaconda has the correct information to create this during install;
++	# afterward, grubby will take care of syncing on updates.  If the user
++	# has modified /etc/default/grub, try to cope.
++	if [[ ! "$cmdline" =~ "rhgb quiet" ]]; then
++	    # ensure these only show up once
++	    cmdline="$cmdline rhgb quiet"
++	fi
++	echo "$cmdline" > /etc/kernel/cmdline
+     fi
+ 
+     for bls in "${files[@]}"; do
diff --git a/20-grub.install b/20-grub.install
index 2a0ac32..bc55a14 100755
--- a/20-grub.install
+++ b/20-grub.install
@@ -87,6 +87,10 @@ case "$COMMAND" in
 
         if [[ "x${GRUB_ENABLE_BLSCFG}" = "xtrue" ]] || [[ ! -f /sbin/new-kernel-pkg ]]; then
             if [[ -f /etc/kernel/cmdline ]]; then
+                if [[ /etc/kernel/cmdline -ot /etc/default/grub ]]; then
+                    # user modified /etc/default/grub manually; sync
+                    grub2-mkconfig -o /etc/grub2.cfg
+                fi
                 read -r -d '' -a BOOT_OPTIONS < /etc/kernel/cmdline
             elif [[ -f /usr/lib/kernel/cmdline ]]; then
                 read -r -d '' -a BOOT_OPTIONS < /usr/lib/kernel/cmdline
diff --git a/grub.patches b/grub.patches
index 58ef358..4edcd52 100644
--- a/grub.patches
+++ b/grub.patches
@@ -275,3 +275,4 @@ Patch0274: 0274-efi-allocate-the-initrd-within-the-bounds-expressed-.patch
 Patch0275: 0275-efi-use-EFI_LOADER_-CODE-DATA-for-kernel-and-initrd-.patch
 Patch0276: 0276-BLS-create-etc-kernel-cmdline-during-mkconfig.patch
 Patch0277: 0277-Try-reserving-less-ram.patch
+Patch0278: 0278-squish-don-t-dup-rhgb-quiet-check-mtimes.patch
diff --git a/grub2.spec b/grub2.spec
index 805648a..f3bd0e8 100644
--- a/grub2.spec
+++ b/grub2.spec
@@ -17,7 +17,7 @@
 Name:		grub2
 Epoch:		1
 Version:	2.06
-Release:	49%{?dist}
+Release:	50%{?dist}
 Summary:	Bootloader with support for Linux, Multiboot and more
 License:	GPLv3+
 URL:		http://www.gnu.org/software/grub/
@@ -530,6 +530,9 @@ mv ${EFI_HOME}/grub.cfg.stb ${EFI_HOME}/grub.cfg
 %endif
 
 %changelog
+* Wed Aug 17 2022 Robbie Harwood <rharwood@redhat.com> - 2.06-50
+- Fix duplicated args and cope with /etc/default/grub modification
+
 * Mon Aug 15 2022 Robbie Harwood <rharwood@redhat.com> - 2.06-49
 - Skip rpm mtime verification on likely-vfat filesystems