diff --git a/build_tools/list_committers_since.fish b/build_tools/list_committers_since.fish
index 64c9ae3a0..e5c51c423 100755
--- a/build_tools/list_committers_since.fish
+++ b/build_tools/list_committers_since.fish
@@ -20,8 +20,8 @@ set committers_from_tag (mktemp)
 # Unicode collation tables mean that this is fraught with danger; for example, the
 # "“" character will not case-fold in UTF-8 locales. sort suggests using the C locale!
 
-git log "$TAG"   --format="%aN" --reverse | sort | uniq > $committers_to_tag
-git log "$TAG".. --format="%aN" --reverse | sort | uniq > $committers_from_tag
+git log "$TAG"   --format="%aN" --reverse | sort -u > $committers_to_tag
+git log "$TAG".. --format="%aN" --reverse | sort -u > $committers_from_tag
 
 echo New committers:
 echo (comm -13 $committers_to_tag $committers_from_tag)','
diff --git a/share/completions/zfs.fish b/share/completions/zfs.fish
index 44cd83beb..4b8227231 100644
--- a/share/completions/zfs.fish
+++ b/share/completions/zfs.fish
@@ -203,7 +203,7 @@ function __fish_zfs_list_permissions
         echo -e "casesensitivity\t"(_ "Case sensitivity")" (sensitive, insensitive, mixed)"
     end
     # Permissions set; if none are found, or if permission sets are not supported, no output is expected, even an error
-    for i in (zpool list -o name -H); zfs allow $i; end | grep -o '@[[:alnum:]]*' | sort | uniq
+    for i in (zpool list -o name -H); zfs allow $i; end | grep -o '@[[:alnum:]]*' | sort -u
 end
 
 complete -c zfs -f -n '__fish_zfs_needs_command' -s '?' -a '?' -d 'Display a help message'