diff --git a/modules/Migration/schema/720_to_730.php b/modules/Migration/schema/720_to_730.php
index 14506164f678cdbd69f0a008c88c00f3aad35634..d048909f4299812fc2e5a43129018382b39c96cf 100644
--- a/modules/Migration/schema/720_to_730.php
+++ b/modules/Migration/schema/720_to_730.php
@@ -291,4 +291,10 @@ if (defined('VTIGER_UPGRADE')) {
             }
     }
     echo "unwanted files..cleared.<br>";
+    
+    //update conditions column of vtiger_calendar_default_activitytypes
+    $db->pquery('ALTER TABLE vtiger_calendar_default_activitytypes DROP COLUMN conditions', array());
+    $db->pquery('ALTER TABLE vtiger_calendar_default_activitytypes ADD COLUMN conditions VARCHAR(255) DEFAULT ""', array());
+    
+    echo 'Conditions column in vtiger_calendar_default_activitytypes updated';
 }
\ No newline at end of file