diff --git a/docs/highlighters/main.md b/docs/highlighters/main.md
index f4507d8..3b0e853 100644
--- a/docs/highlighters/main.md
+++ b/docs/highlighters/main.md
@@ -85,11 +85,11 @@ manual page][zshzle-Character-Highlighting].
 
 #### Parameters
 
-To avoid partial path lookups on a path, add the path to the `X_ZSH_HIGHLIGHT_DIRS_BLACKLIST` array.
+To avoid partial path lookups on a path, add the path to the `ZSH_HIGHLIGHT_DIRS_BLACKLIST` array.
 This interface is still experimental.
 
 ```zsh
-X_ZSH_HIGHLIGHT_DIRS_BLACKLIST+=(/mnt/slow_share)
+ZSH_HIGHLIGHT_DIRS_BLACKLIST+=(/mnt/slow_share)
 ```
 
 ### Useless trivia
diff --git a/highlighters/main/main-highlighter.zsh b/highlighters/main/main-highlighter.zsh
index 91be6ca..9c80792 100644
--- a/highlighters/main/main-highlighter.zsh
+++ b/highlighters/main/main-highlighter.zsh
@@ -355,6 +355,12 @@ _zsh_highlight_highlighter_main_paint()
     '!' # reserved word; unrelated to $histchars[1]
   )
 
+  if (( $+X_ZSH_HIGHLIGHT_DIRS_BLACKLIST )); then
+    print >&2 'zsh-syntax-highlighting: X_ZSH_HIGHLIGHT_DIRS_BLACKLIST is deprecated. Please use ZSH_HIGHLIGHT_DIRS_BLACKLIST.'
+    ZSH_HIGHLIGHT_DIRS_BLACKLIST=($X_ZSH_HIGHLIGHT_DIRS_BLACKLIST)
+    unset X_ZSH_HIGHLIGHT_DIRS_BLACKLIST
+  fi
+
   _zsh_highlight_main_highlighter_highlight_list -$#PREBUFFER '' 1 "$PREBUFFER$BUFFER"
 
   # end is a reserved word
@@ -966,7 +972,7 @@ _zsh_highlight_main_highlighter_check_path()
   tmp_path=$tmp_path:a
 
   while [[ $tmp_path != / ]]; do
-    [[ -n ${(M)X_ZSH_HIGHLIGHT_DIRS_BLACKLIST:#$tmp_path} ]] && return 1
+    [[ -n ${(M)ZSH_HIGHLIGHT_DIRS_BLACKLIST:#$tmp_path} ]] && return 1
     tmp_path=$tmp_path:h
   done
 
@@ -1411,4 +1417,4 @@ else
   # Make sure the cache is unset
   unset _zsh_highlight_main__command_type_cache
 fi
-typeset -ga X_ZSH_HIGHLIGHT_DIRS_BLACKLIST
+typeset -ga ZSH_HIGHLIGHT_DIRS_BLACKLIST
diff --git a/highlighters/main/test-data/dirs_blacklist.zsh b/highlighters/main/test-data/dirs_blacklist.zsh
index 8cf04be..2d0222f 100644
--- a/highlighters/main/test-data/dirs_blacklist.zsh
+++ b/highlighters/main/test-data/dirs_blacklist.zsh
@@ -30,7 +30,7 @@
 mkdir foo
 touch foo/bar
 BUFFER=": foo/bar $PWD/foo foo/b"
-X_ZSH_HIGHLIGHT_DIRS_BLACKLIST=($PWD/foo $PWD/bar)
+ZSH_HIGHLIGHT_DIRS_BLACKLIST=($PWD/foo $PWD/bar)
 
 expected_region_highlight=(
   '1 1 builtin' # :
diff --git a/zsh-syntax-highlighting.zsh b/zsh-syntax-highlighting.zsh
index df8a1aa..320ce5b 100644
--- a/zsh-syntax-highlighting.zsh
+++ b/zsh-syntax-highlighting.zsh
@@ -432,6 +432,12 @@ zmodload zsh/parameter 2>/dev/null || true
 # Initialize the array of active highlighters if needed.
 [[ $#ZSH_HIGHLIGHT_HIGHLIGHTERS -eq 0 ]] && ZSH_HIGHLIGHT_HIGHLIGHTERS=(main)
 
+if (( $+X_ZSH_HIGHLIGHT_DIRS_BLACKLIST )); then
+  print >&2 'zsh-syntax-highlighting: X_ZSH_HIGHLIGHT_DIRS_BLACKLIST is deprecated. Please use ZSH_HIGHLIGHT_DIRS_BLACKLIST.'
+  ZSH_HIGHLIGHT_DIRS_BLACKLIST=($X_ZSH_HIGHLIGHT_DIRS_BLACKLIST)
+  unset X_ZSH_HIGHLIGHT_DIRS_BLACKLIST
+fi
+
 # Restore the aliases we unned
 eval "$zsh_highlight__aliases"
 builtin unset zsh_highlight__aliases