diff --git a/emacs-bookmark.zsh b/emacs-bookmark.zsh
index 636a61e..41644c6 100644
--- a/emacs-bookmark.zsh
+++ b/emacs-bookmark.zsh
@@ -289,8 +289,8 @@ compdef _bmrm bmrm
 
 function __bm_precmd_hook {
     # Auto reload
-    if [[ "${BM_AUTO_RELOAD}" == 'true' ]] &&
-           (( ${__bm_last_read_time} < "$(zstat +mtime "${BM_BOOKMARK_PATH}")" )); then
+    if [[ "${BM_AUTO_RELOAD}" == true ]] &&
+           (( ${__bm_last_read_time} < $(zstat +mtime "${BM_BOOKMARK_PATH}") )); then
         __bm_update_bookmark_list
     fi
 }