diff --git a/content/static/js/main.js b/content/static/js/main.js
index 7031d04805ef5d33158144f86b82d3b9d64054a2..bb4563d4ae6091d1d0544e196f9361d00a1df11c 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() + 1
+		+ (birthDate.getMonth() + 1)
 		+ ". "
 		+ birthDate.getFullYear()
 	);