diff --git a/src/localization/methods_fi.js b/src/localization/methods_fi.js
new file mode 100644
index 000000000..89b150ab8
--- /dev/null
+++ b/src/localization/methods_fi.js
@@ -0,0 +1,12 @@
+/*
+ * Localized default methods for the jQuery validation plugin.
+ * Locale: FI
+ */
+jQuery.extend(jQuery.validator.methods, {
+	date: function(value, element) {
+		return this.optional(element) || /^\d{1,2}\.\d{1,2}\.\d{4}$/.test(value);
+	},
+	number: function(value, element) {
+		return this.optional(element) || /^-?(?:\d+)(?:,\d+)?$/.test(value);
+	}
+});