diff --git a/app/Models/AccountType.php b/app/Models/AccountType.php
index 40b9a872eb..1ba108a8ce 100644
--- a/app/Models/AccountType.php
+++ b/app/Models/AccountType.php
@@ -41,6 +41,9 @@ class AccountType extends Model
     const RECONCILIATION  = 'Reconciliation account';
     const LOAN            = 'Loan';
 
+    /** @var array  */
+    protected $fillable = ['type'];
+
     /**
      * The attributes that should be casted to native types.
      *
diff --git a/app/Models/TransactionType.php b/app/Models/TransactionType.php
index 33f5dc58eb..9668384b2f 100644
--- a/app/Models/TransactionType.php
+++ b/app/Models/TransactionType.php
@@ -39,6 +39,9 @@ class TransactionType extends Model
     const OPENING_BALANCE = 'Opening balance';
     const RECONCILIATION  = 'Reconciliation';
 
+    /** @var array  */
+    protected $fillable = ['type'];
+
     /**
      * The attributes that should be casted to native types.
      *