diff --git a/workflow/engine/src/ProcessMaker/BusinessModel/Process.php b/workflow/engine/src/ProcessMaker/BusinessModel/Process.php
index a8a675e6b..1ea3d8581 100644
--- a/workflow/engine/src/ProcessMaker/BusinessModel/Process.php
+++ b/workflow/engine/src/ProcessMaker/BusinessModel/Process.php
@@ -215,6 +215,7 @@ class Process
                             }
 
                             //type
+                            $fieldValue = (!is_array($fieldValue)) ? $fieldValue : '';
                             if ($arrayFieldDefinition[$fieldName]["empty"] && $fieldValue . "" == "") {
                                 //
                             } else {