diff --git a/code/MathSpamProtector.php b/code/MathSpamProtector.php
index 365333c..5e2d5f5 100644
--- a/code/MathSpamProtector.php
+++ b/code/MathSpamProtector.php
@@ -22,4 +22,7 @@ class MathSpamProtector implements SpamProtector
     public function setFieldMapping($fieldMapping)
     {
     }
+
+    public function __construct($options = array()) {
+    }
 }
diff --git a/composer.json b/composer.json
index 53951c3..7aba73f 100644
--- a/composer.json
+++ b/composer.json
@@ -9,7 +9,7 @@
 	}],
 	"minimum-stability": "dev",
 	"require": {
-		"silverstripe/spamprotection": "dev-master"
+		"silverstripe/spamprotection": "~2.0"
 	},
 	"license": "BSD-3-Clause"
 }