diff --git a/changelog.md b/changelog.md
index 6c75259..120750c 100644
--- a/changelog.md
+++ b/changelog.md
@@ -77,7 +77,7 @@
 
 - Fix an error message on stderr before every prompt when the `WARN_NESTED_VAR` zsh option is set:
   `_zsh_highlight_main__precmd_hook:1: array parameter _zsh_highlight_main__command_type_cache set in enclosing scope in function _zsh_highlight_main__precmd_hook`
-  [#727, #731]
+  [#727, #731, #732, #733]
 
 # Changes in version 0.7.1
 
diff --git a/highlighters/main/main-highlighter.zsh b/highlighters/main/main-highlighter.zsh
index e4a17e0..59d4036 100644
--- a/highlighters/main/main-highlighter.zsh
+++ b/highlighters/main/main-highlighter.zsh
@@ -1692,7 +1692,7 @@ _zsh_highlight_main__precmd_hook() {
   # Unset the WARN_NESTED_VAR option, taking care not to error if the option
   # doesn't exist (zsh older than zsh-5.3.1-test-2).
   setopt localoptions
-  if [[ -o warnnestedvar ]] 2>/dev/null; then
+  if eval '[[ -o warnnestedvar ]]' 2>/dev/null; then
     unsetopt warnnestedvar
   fi