diff --git a/http-signature-auth.php b/http-signature-auth.php
index 3236b4f..bb84dc1 100644
--- a/http-signature-auth.php
+++ b/http-signature-auth.php
@@ -106,7 +106,7 @@ static function parse(array $headers, array $options = array())
 
 			case $states['space'];
 				if (ctype_space($ch)) {
-					continue;
+					break;
 				}
 
 				$state = $states['param'];