diff --git a/content/static/js/main.js b/content/static/js/main.js
index 8ae649cd09bf7831171fdad1ad822992e42b14b7..7031d04805ef5d33158144f86b82d3b9d64054a2 100644
--- a/content/static/js/main.js
+++ b/content/static/js/main.js
@@ -190,7 +190,7 @@ const fillCanvas = async () => {
 	const formattedBirthDate = (
 		birthDate.getDate()
 		+ ". "
-		+ birthDate.getMonth()
+		+ birthDate.getMonth() + 1
 		+ ". "
 		+ birthDate.getFullYear()
 	);
@@ -302,7 +302,7 @@ $(window).ready(
 		$("#current-date").val(
 			currentDate.getDate()
 			+ ". "
-			+ currentDate.getMonth()
+			+ currentDate.getMonth() + 1
 			+ ". "
 			+ currentDate.getFullYear()
 		);