diff --git a/deps/graph-parser/src/logseq/graph_parser/block.cljs b/deps/graph-parser/src/logseq/graph_parser/block.cljs
index b68d357785..7d52df6931 100644
--- a/deps/graph-parser/src/logseq/graph_parser/block.cljs
+++ b/deps/graph-parser/src/logseq/graph_parser/block.cljs
@@ -248,7 +248,7 @@
                               (assoc :repeated? true))))))]
     (apply merge m)))
 
-(defn convert-page-if-journal
+(defn- convert-page-if-journal-impl
   "Convert journal file name to user' custom date format"
   [original-page-name date-formatter]
   (when original-page-name
@@ -259,6 +259,8 @@
          [original-page-name (gp-util/page-name-sanity-lc original-page-name) day])
        [original-page-name page-name day]))))
 
+(def convert-page-if-journal (memoize convert-page-if-journal-impl))
+
 ;; TODO: refactor
 (defn page-name->map
   "Create a page's map structure given a original page name (string).