diff --git a/src/internal/Observable.ts b/src/internal/Observable.ts
index d9e8f0c0d5..6c349180f1 100644
--- a/src/internal/Observable.ts
+++ b/src/internal/Observable.ts
@@ -49,6 +49,7 @@ export class Observable<T> implements Subscribable<T> {
    * @param {Function} subscribe? the subscriber function to be passed to the Observable constructor
    * @return {Observable} a new cold observable
    * @nocollapse
+   * @deprecated use new Observable() instead
    */
   static create: Function = <T>(subscribe?: (subscriber: Subscriber<T>) => TeardownLogic) => {
     return new Observable<T>(subscribe);
diff --git a/src/internal/Subject.ts b/src/internal/Subject.ts
index 4ce87298b3..dce6bc8aa2 100644
--- a/src/internal/Subject.ts
+++ b/src/internal/Subject.ts
@@ -39,7 +39,9 @@ export class Subject<T> extends Observable<T> implements SubscriptionLike {
     super();
   }
 
-  /**@nocollapse */
+  /**@nocollapse
+   * @deprecated use new Subject() instead
+  */
   static create: Function = <T>(destination: Observer<T>, source: Observable<T>): AnonymousSubject<T> => {
     return new AnonymousSubject<T>(destination, source);
   }