diff --git a/types/sequelize/index.d.ts b/types/sequelize/index.d.ts
index a7f5b0afe5..43196e4aec 100644
--- a/types/sequelize/index.d.ts
+++ b/types/sequelize/index.d.ts
@@ -2097,7 +2097,7 @@ declare namespace sequelize {
 
     }
 
-    interface UniqueConstraintError extends DatabaseError {
+    interface UniqueConstraintError extends ValidationError {
 
         /**
          * Thrown when a unique constraint is violated in the database
@@ -3247,8 +3247,8 @@ declare namespace sequelize {
              * https://github.com/sequelize/sequelize/blob/master/docs/docs/models-usage.md#user-content-manipulating-the-dataset-with-limit-offset-order-and-group
          */
         group?: string | string[] | Object;
-                     
-                     
+
+
         /**
          * Apply DISTINCT(col) for FindAndCount(all)
          */
diff --git a/types/sequelize/sequelize-tests.ts b/types/sequelize/sequelize-tests.ts
index cc4462fa86..a02b1a38f8 100644
--- a/types/sequelize/sequelize-tests.ts
+++ b/types/sequelize/sequelize-tests.ts
@@ -630,6 +630,8 @@ new s.HostNotReachableError( new Error( 'original connection error message' ) );
 new s.InvalidConnectionError( new Error( 'original connection error message' ) );
 new s.ConnectionTimedOutError( new Error( 'original connection error message' ) );
 
+const uniqueConstraintError: Sequelize.ValidationError = new s.UniqueConstraintError({});
+
 //
 //  Hooks
 // ~~~~~~~
diff --git a/types/sequelize/v3/index.d.ts b/types/sequelize/v3/index.d.ts
index 2f2f973c19..59c06f05bf 100644
--- a/types/sequelize/v3/index.d.ts
+++ b/types/sequelize/v3/index.d.ts
@@ -2096,7 +2096,7 @@ declare namespace sequelize {
 
     }
 
-    interface UniqueConstraintError extends DatabaseError {
+    interface UniqueConstraintError extends ValidationError {
 
         /**
          * Thrown when a unique constraint is violated in the database
diff --git a/types/sequelize/v3/sequelize-tests.ts b/types/sequelize/v3/sequelize-tests.ts
index 9f5eac61ad..3cce75b440 100644
--- a/types/sequelize/v3/sequelize-tests.ts
+++ b/types/sequelize/v3/sequelize-tests.ts
@@ -628,6 +628,7 @@ new s.HostNotReachableError( new Error( 'original connection error message' ) );
 new s.InvalidConnectionError( new Error( 'original connection error message' ) );
 new s.ConnectionTimedOutError( new Error( 'original connection error message' ) );
 
+const uniqueConstraintError: Sequelize.ValidationError = new s.UniqueConstraintError({});
 //
 //  Hooks
 // ~~~~~~~