diff --git a/src/includes/class.lang.php b/src/includes/class.lang.php
index 56edbff..bc66f86 100644
--- a/src/includes/class.lang.php
+++ b/src/includes/class.lang.php
@@ -109,7 +109,7 @@ class Lang
         $a['daysMin'] = $this->get('days_min');
         $a['daysLong'] = $this->get('days_long');
         $a['monthsShort'] = $this->get('months_short');
-        $a['monthsLong'] = $this->get('months_long');
+        $a['monthsLong'] = $this->get('months_calendar');
 
         $this->fillWithValues($a, [
             'confirmDelete',
diff --git a/src/includes/lang/en.json b/src/includes/lang/en.json
index c9d6c63..aa68e0d 100644
--- a/src/includes/lang/en.json
+++ b/src/includes/lang/en.json
@@ -72,6 +72,20 @@
         "November",
         "December"
     ],
+    "months_calendar": [
+        "January",
+        "February",
+        "March",
+        "April",
+        "May",
+        "June",
+        "July",
+        "August",
+        "September",
+        "October",
+        "November",
+        "December"
+    ],
     "days_min": [
         "Su",
         "Mo",
diff --git a/src/includes/lang/ru.json b/src/includes/lang/ru.json
index 7f2827c..834997a 100644
--- a/src/includes/lang/ru.json
+++ b/src/includes/lang/ru.json
@@ -59,6 +59,20 @@
         "Дек"
     ],
     "months_long": [
+        "января",
+        "февраля",
+        "марта",
+        "апреля",
+        "мая",
+        "июня",
+        "июля",
+        "августа",
+        "сентября",
+        "октября",
+        "ноября",
+        "декабря"
+    ],
+    "months_calendar": [
         "Январь",
         "Февраль",
         "Март",