1 files changed, 4 insertions, 1 deletions
diff --git a/rpc.php b/rpc.php
index b691bd8..8c72e0f 100644
--- a/rpc.php
+++ b/rpc.php
@@ -107,7 +107,10 @@ class PHPFSPOT_RPC {
             break;
 
          case 'get_calendar_matrix':
-            $fspot->get_calendar_matrix($_GET['year'], $_GET['month'], $_GET['day']);
+            if(is_numeric($_GET['year']) && is_numeric($_GET['month']) &&
+               is_numeric($_GET['day'])) {
+               $fspot->get_calendar_matrix($_GET['year'], $_GET['month'], $_GET['day']);
+            }
             break;
 
          case 'what_to_do':