diff --git a/lib/bot_protection.php b/lib/bot_protection.php
index e3d51a8..af66f5e 100644
--- a/lib/bot_protection.php
+++ b/lib/bot_protection.php
@@ -132,6 +132,8 @@ class bot_protection{
 			
 			$answers[] = $regex;
 		}
+		// dedup
+			$answers = array_unique($answers);
 		
 		if(
 			!$invalid &&