diff --git a/share/completions/tar.fish b/share/completions/tar.fish
index 3f43963b2..a420ad88c 100644
--- a/share/completions/tar.fish
+++ b/share/completions/tar.fish
@@ -20,17 +20,16 @@ end
 
 complete -c tar -a "(__fish_complete_tar)"
 
-complete -c tar -s A -l catenate -d "Append archive to archive"
-complete -c tar -l concatenate -d "Append archive to archive"
+complete -c tar -s A -l catenate -l concatenate -d "Append archive to archive"
 complete -c tar -s c -l create -d "Create archive"
-complete -c tar -s d -l diff -d "Compare archive and filesystem"
-complete -c tar -l compare -d "Compare archive and filesystem"
+complete -c tar -s d -l diff -l compare -d "Compare archive and filesystem"
 complete -c tar -l delete -d "Delete from archive"
 complete -c tar -s r -l append -d "Append files to archive"
 complete -c tar -s t -l list -d "List archive"
 complete -c tar -s u -l update -d "Append new files"
-complete -c tar -s x -l extract -d "Extract from archive"
-complete -c tar -l get -d "Extract from archive"
+complete -c tar -s x -l extract -l get -d "Extract from archive"
+complete -c tar -s \? -l help -d "Display short option summary"
+complete -c tar -l usage -d "List available options"
 complete -c tar -l atime-preserve -d "Keep access time"
 complete -c tar -s b -l block-size -d "Block size"
 complete -c tar -s B -l read-full-blocks -d "Reblock while reading"
@@ -46,6 +45,7 @@ complete -c tar -s i -l ignore-zeros -d "Ignore zero block in archive"
 complete -c tar -s j -l bzip2 -d "Filter through bzip2"
 complete -c tar -l ignore-failed-read -d "Don't exit on unreadable files"
 complete -c tar -s k -l keep-old-files -d "Don't overwrite"
+complete -c tar -l one-top-level -d "Extract into directory"
 complete -c tar -s K -l starting-file -r -d "Starting file in archive"
 complete -c tar -s l -l one-file-system -d "Stay in local filesystem"
 complete -c tar -s L -l tape-length -r -d "Tape length"