diff --git a/includes/controller/event_config_controller.php b/includes/controller/event_config_controller.php
index 2e5175e9..a9709d38 100644
--- a/includes/controller/event_config_controller.php
+++ b/includes/controller/event_config_controller.php
@@ -50,19 +50,19 @@ function event_config_edit_controller() {
     
     $result = check_request_date('buildup_start_date', _("Please enter buildup start date."), true);
     $buildup_start_date = $result->getValue();
-    $valid &= $result->isOk();
+    $valid &= $result->isValid();
     
     $result = check_request_date('event_start_date', _("Please enter event start date."), true);
     $event_start_date = $result->getValue();
-    $valid &= $result->isOk();
+    $valid &= $result->isValid();
     
     $result = check_request_date('event_end_date', _("Please enter event end date."), true);
     $event_end_date = $result->getValue();
-    $valid &= $result->isOk();
+    $valid &= $result->isValid();
     
     $result = check_request_date('teardown_end_date', _("Please enter teardown end date."), true);
     $teardown_end_date = $result->getValue();
-    $valid &= $result->isOk();
+    $valid &= $result->isValid();
     
     if ($buildup_start_date != null && $event_start_date != null && $buildup_start_date > $event_start_date) {
       $valid = false;
diff --git a/includes/sys_page.php b/includes/sys_page.php
index 78972448..a2f9fff6 100644
--- a/includes/sys_page.php
+++ b/includes/sys_page.php
@@ -122,8 +122,8 @@ class ValidationResult {
   /**
    * Is the value valid?
    */
-  public function isOk() {
-    return $this->ok;
+  public function isValid() {
+    return $this->valid;
   }
 
   /**