diff --git a/Completion/X/_x_extension b/Completion/X/_x_extension
deleted file mode 100644
index d1a299e8b..000000000
--- a/Completion/X/_x_extension
+++ /dev/null
@@ -1,19 +0,0 @@
-#autoload
-
-local expl
-
-_tags extensions || return 1
-
-(( $+_xe_cache )) || _xe_cache=( "${(@)${(@f)$(xdpyinfo)}[(r)number of extensions:*,-1][2,(r)default screen number:*][1,-2]//[      ]}" )
-
-if [[ "$1" = -a ]]; then
-  shift
-
-  _wanted extensions expl 'X extensions' \
-      compadd "$@" -M 'm:{a-z}={A-Z} r:|-=* r:|=*' - all "$_xe_cache[@]"
-else
-  [[ "$1" = - ]] && shift
-
-  _wanted extensions expl 'X extensions' \
-      compadd "$@" -M 'm:{a-z}={A-Z} r:|-=* r:|=*' -a _xe_cache
-fi