diff --git a/module/execution/model.php b/module/execution/model.php
index 661f57a126..4a3cb4333b 100755
--- a/module/execution/model.php
+++ b/module/execution/model.php
@@ -231,7 +231,7 @@ class executionModel extends model
         }
 
         /* Save session. */
-        $this->executionTao->saveSession($executionID);
+        $this->executionTao->saveSession((int)$executionID);
 
         /* Return execution id. */
         return $executionID;