diff --git a/lib/bennu/iCalendar_parameters.php b/lib/bennu/iCalendar_parameters.php
index d264083..af3f5ad 100644
--- a/lib/bennu/iCalendar_parameters.php
+++ b/lib/bennu/iCalendar_parameters.php
@@ -178,7 +176,7 @@ class iCalendar_parameter {
                 if(empty($value)) {
                     return false;
                 }
-                return (strcspn($value, '";:,') == strlen($value));
+                return (strcspn($value, ';:,') == strlen($value));
             break;
 
             case 'VALUE':
@@ -227,7 +225,7 @@ class iCalendar_parameter {
 
             // Parameters we shouldn't be messing with
             case 'TZID':
-                return $value;
+                return str_replace('"', '', $value);
             break;
         }
     }