diff --git a/code/MathSpamProtectorField.php b/code/MathSpamProtectorField.php
index 91bdcf0..0c21d72 100644
--- a/code/MathSpamProtectorField.php
+++ b/code/MathSpamProtectorField.php
@@ -107,7 +107,7 @@ class MathSpamProtectorField extends SpamProtectorField {
 		Session::clear('mathQuestionV1');
 		Session::clear('mathQuestionV2');
 
-		return (MathSpamProtectorField::digit_to_word($v1 + $v2) == $answer || ($v1 + $v2) == $answer);
+		return (MathSpamProtectorField::digit_to_word($v1 + $v2) == strtolower($answer) || ($v1 + $v2) == $answer);
 	}
 
 	/**
@@ -158,4 +158,4 @@ class MathSpamProtectorField extends SpamProtectorField {
 	public static function set_enabled($enabled = true) {
 		self::$enabled = $enabled;
 	}
-}
\ No newline at end of file
+}