diff --git a/usr/share/archboot/installer/setup b/usr/share/archboot/installer/setup
index abdeb3b2c..67e843745 100755
--- a/usr/share/archboot/installer/setup
+++ b/usr/share/archboot/installer/setup
@@ -2362,10 +2362,10 @@ dogrub() {
         sync
         # freeze xfs filesystems to enable grub installation on xfs filesystems
         if [ -x /usr/sbin/xfs_freeze ]; then
-            if [ $(cat /proc/mounts | grep "$DESTDIR/boot " | grep " xfs ") ]; then
+            if [ "$(cat /proc/mounts | grep "$DESTDIR/boot " | grep " xfs ")" ]; then
                 /usr/sbin/xfs_freeze -f $DESTDIR/boot > /dev/null 2>&1
             fi
-            if [ $(cat /proc/mounts | grep "$DESTDIR/ " | grep " xfs ") ]; then
+            if [ "$(cat /proc/mounts | grep "$DESTDIR/ " | grep " xfs ")" ]; then
                 /usr/sbin/xfs_freeze -f $DESTDIR/ > /dev/null 2>&1
             fi
         fi
@@ -2403,10 +2403,10 @@ EOF
         cat /tmp/grub.log >$LOG
         # unfreeze xfs filesystems
         if [ -x /usr/sbin/xfs_freeze ]; then
-            if [ $(cat /proc/mounts | grep "$DESTDIR/boot " | grep " xfs ") ]; then
+            if [ "$(cat /proc/mounts | grep "$DESTDIR/boot " | grep " xfs ")" ]; then
                 /usr/sbin/xfs_freeze -u $DESTDIR/boot > /dev/null 2>&1
             fi
-            if [ $(cat /proc/mounts | grep "$DESTDIR/ " | grep " xfs ") ]; then
+            if [ "$(cat /proc/mounts | grep "$DESTDIR/ " | grep " xfs ")" ]; then
                 /usr/sbin/xfs_freeze -u $DESTDIR/ > /dev/null 2>&1
             fi
         fi