diff --git a/sequelize-fixtures/sequelize-fixtures-tests.ts b/sequelize-fixtures/sequelize-fixtures-tests.ts
index 567cf5967..c6edfd28f 100644
--- a/sequelize-fixtures/sequelize-fixtures-tests.ts
+++ b/sequelize-fixtures/sequelize-fixtures-tests.ts
@@ -15,7 +15,8 @@ SequelizeFixtures.loadFiles([], {}, { log: m => { } }).then(() => { });
 SequelizeFixtures.loadFixture({}, {}).then(() => { });
 sequelize.transaction(function (tx) {
     SequelizeFixtures.loadFixture({}, {}, { transaction: tx }).then(() => { });
+    return null;
 });
 
 SequelizeFixtures.loadFixtures([], {}).then(() => { });
-SequelizeFixtures.loadFixtures([], {}, { transformFixtureDataFn: (data) => { return data; } }).then(() => { });
\ No newline at end of file
+SequelizeFixtures.loadFixtures([], {}, { transformFixtureDataFn: (data) => { return data; } }).then(() => { });
diff --git a/sequelize-fixtures/sequelize-fixtures.d.ts b/sequelize-fixtures/sequelize-fixtures.d.ts
index 3cdf3fe8d..5358110f1 100644
--- a/sequelize-fixtures/sequelize-fixtures.d.ts
+++ b/sequelize-fixtures/sequelize-fixtures.d.ts
@@ -18,14 +18,14 @@ declare module "sequelize-fixtures"
         }
 
         interface SequelizeFixturesStatic {
-            loadFile(file: string, models: any, options?: Options): Sequelize.Promise;
-            loadFiles(files: string[], models: any, options?: Options): Sequelize.Promise;
-            loadFixture(fixture: any, models: any, options?: Options): Sequelize.Promise;
-            loadFixtures(fixtures: any[], models: any, options?: Options): Sequelize.Promise;
+            loadFile(file: string, models: any, options?: Options): Promise<any>;
+            loadFiles(files: string[], models: any, options?: Options): Promise<any>;
+            loadFixture(fixture: any, models: any, options?: Options): Promise<any>;
+            loadFixtures(fixtures: any[], models: any, options?: Options): Promise<any>;
         }
     }
 
     var sequelizeFixtures: SequelizeFixtures.SequelizeFixturesStatic;
 
     export = sequelizeFixtures;
-}
\ No newline at end of file
+}