diff --git a/pacman-zfs-snapshot.sh b/pacman-zfs-snapshot.sh
index 438e939..116696a 100755
--- a/pacman-zfs-snapshot.sh
+++ b/pacman-zfs-snapshot.sh
@@ -31,7 +31,8 @@ snap_op_remove_suffix="${snap_op_remove_suffix:-rmvl}"
 snap_op_upgrade_suffix="${snap_op_upgrade_suffix:-upgr}"
 
 # Internal
-declare pkg_separator max_zfs_snapshot_name_length color_reset color_lyellow color_red
+declare zfs_prop pkg_separator max_zfs_snapshot_name_length color_reset color_lyellow color_red
+zfs_prop='space.quico:auto-snapshot'
 pkg_separator=':'
 max_zfs_snapshot_name_length='255'
 color_reset='\e[0m'
@@ -95,12 +96,12 @@ function set_severity () {
 
 function get_globally_snappable_datasets () {
     local datasets_list
-    # For all datasets show their 'space.quico:auto-snapshot' property; only
-    # print dataset name in column 1 and property value in column 2. In awk
-    # limit this list to datasets where tab-delimited column 2 has exact
-    # string '^true$' then further limit output by eliminating snapshots
-    # from list, i.e. dataset names that contain an '@' character.
-    datasets_list="$(zfs get -H -o 'name,value' 'space.quico:auto-snapshot' | \
+    # For all datasets show their "${zfs_prop}" property; only print dataset
+    # name in column 1 and property value in column 2. In awk limit this
+    # list to datasets where tab-delimited column 2 has exact string
+    # '^true$' then further limit output by eliminating snapshots from list,
+    # i.e. dataset names that contain an '@' character.
+    datasets_list="$(zfs get -H -o 'name,value' "${zfs_prop}" | \
                      awk -F'\t' '{if($2 ~ /^true$/ && $1 !~ /@/) print $1}')"
     while IFS= read -u10 -r dataset; do
         globally_snappable_datasets+=("${dataset}")