diff --git a/ts/00_commitinfo_data.ts b/ts/00_commitinfo_data.ts
index 3254a3b..c754ec9 100644
--- a/ts/00_commitinfo_data.ts
+++ b/ts/00_commitinfo_data.ts
@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@pushrocks/smartpromise',
-  version: '3.1.8',
+  version: '3.1.9',
   description: 'simple promises and Deferred constructs'
 }
diff --git a/ts/index.ts b/ts/index.ts
index 2e0f30b..e193b45 100644
--- a/ts/index.ts
+++ b/ts/index.ts
@@ -1,6 +1,6 @@
 import { defer } from './smartpromise.classes.deferred.js';
 
-export * from './smartpromise.classes.commulativepromise.js';
+export * from './smartpromise.classes.cumulativedeferred.js';
 export * from './smartpromise.classes.deferred.js';
 
 
diff --git a/ts/smartpromise.classes.commulativepromise.ts b/ts/smartpromise.classes.cumulativedeferred.ts
similarity index 82%
rename from ts/smartpromise.classes.commulativepromise.ts
rename to ts/smartpromise.classes.cumulativedeferred.ts
index 238f2ab..07d7747 100644
--- a/ts/smartpromise.classes.commulativepromise.ts
+++ b/ts/smartpromise.classes.cumulativedeferred.ts
@@ -1,6 +1,6 @@
 import { defer } from "./smartpromise.classes.deferred.js";
 
-export class ComulativeDeferred {
+export class CumulativeDeferred {
   private accumulatedPromises: Promise<any>[] = [];
   private deferred = defer();
   public promise = this.deferred.promise;
@@ -21,6 +21,6 @@ export class ComulativeDeferred {
 }
 
 
-export const commulativeDefer = () => {
-  return new ComulativeDeferred();
+export const cumulativeDefer = () => {
+  return new CumulativeDeferred();
 }
\ No newline at end of file