diff --git a/share/completions/builtin.fish b/share/completions/builtin.fish
index 27800d3b3..dd463a23a 100644
--- a/share/completions/builtin.fish
+++ b/share/completions/builtin.fish
@@ -1,4 +1,5 @@
 complete -c builtin -n 'test (count (commandline -opc)) -eq 1' -s h -l help -d 'Display help and exit'
 complete -c builtin -n 'test (count (commandline -opc)) -eq 1' -s n -l names -d 'Print names of all existing builtins'
+complete -c builtin -n 'test (count (commandline -opc)) -eq 1' -s q -l query -d 'Tests if builtin exists'
 complete -c builtin -n 'test (count (commandline -opc)) -eq 1' -xa '(builtin -n)'
 complete -c builtin -n 'test (count (commandline -opc)) -ge 2' -xa '(__fish_complete_subcommand)'