diff --git a/src/BBOrm/Entity.php b/src/BBOrm/Entity.php
index bede713..37b0272 100644
--- a/src/BBOrm/Entity.php
+++ b/src/BBOrm/Entity.php
@@ -96,7 +96,7 @@ abstract class Entity {
             $first_argument .= $column . ', ';
 
             $insert_data[$column] = $obj[$column];
-            $second_argument .= " = :$column, ";
+            $second_argument .= ":$column, ";
         }
 
         $first_argument = rtrim($first_argument, ', ');