diff --git a/src/MondayAPI/ObjectTypes/Column.php b/src/MondayAPI/ObjectTypes/Column.php
index ca639ab..af1f6c2 100644
--- a/src/MondayAPI/ObjectTypes/Column.php
+++ b/src/MondayAPI/ObjectTypes/Column.php
@@ -30,7 +30,7 @@ public static function newColumnValues( $itens )
                 $column_values[$key] = self::newColValue($key, $value);
             }
         }
-        return addslashes(json_encode($column_values, JSON_PRETTY_PRINT));
+        return addslashes(json_encode($column_values));
     }
 
 }