1 files changed, 3 insertions, 3 deletions

diff --git a/rpc.php b/rpc.php
index 4ffae5f..d0a6c1c 100644
--- a/rpc.php
+++ b/rpc.php
@@ -107,9 +107,9 @@ class PHPFSPOT_RPC {
             break;
 
          case 'get_calendar_matrix':
-            if((is_numeric($_GET['year']) || $_GET['year'] == "") &&
-               (is_numeric($_GET['month']) || $_GET['month'] == "") &&
-               (is_numeric($_GET['day']) || $_GET['month'] == "")) {
+            if((is_numeric($_GET['year']) || !isset($_GET['year'])) &&
+               (is_numeric($_GET['month']) || !isset($_GET['month'])) &&
+               (is_numeric($_GET['day']) || !isset($_GET['day']))) {
                $fspot->get_calendar_matrix($_GET['year'], $_GET['month'], $_GET['day']);
             }
             break;