diff --git a/src/extensions/DatatypeTrait.php b/src/extensions/DatatypeTrait.php
index 0c4bdb2..de9d92d 100644
--- a/src/extensions/DatatypeTrait.php
+++ b/src/extensions/DatatypeTrait.php
@@ -97,7 +97,8 @@ trait DatatypeTrait {
             $firstRow = $this->data[0];
         }
 
-        if (empty(array_filter($firstRow))){
+        $firstRow = array_filter($firstRow);
+        if (empty($firstRow)){
             return false;
         }