diff --git a/types/rx-core-binding/index.d.ts b/types/rx-core-binding/index.d.ts
index e8ba93bd3a..3b7cf59369 100644
--- a/types/rx-core-binding/index.d.ts
+++ b/types/rx-core-binding/index.d.ts
@@ -3,7 +3,7 @@
 // Definitions by: Carl de Billy <http://carl.debilly.net/>, Igor Oleinikov <https://github.com/Igorbek>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
-///<reference types="rx-core"/>
+/// <reference types="rx-core" />
 
 declare namespace Rx {
     interface ISubject<T> extends Observable<T>, Observer<T>, IDisposable {
diff --git a/types/rx-lite-aggregates/index.d.ts b/types/rx-lite-aggregates/index.d.ts
index 72c2ae402f..2b2ce8d6b7 100644
--- a/types/rx-lite-aggregates/index.d.ts
+++ b/types/rx-lite-aggregates/index.d.ts
@@ -3,7 +3,7 @@
 // Definitions by: Carl de Billy <http://carl.debilly.net/>, Igor Oleinikov <https://github.com/Igorbek>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
-///<reference types="rx-lite" />
+/// <reference types="rx-lite" />
 
 declare namespace Rx {
     interface Observable<T> {
diff --git a/types/rx-lite-async/index.d.ts b/types/rx-lite-async/index.d.ts
index 94117a1562..8979b9dd36 100644
--- a/types/rx-lite-async/index.d.ts
+++ b/types/rx-lite-async/index.d.ts
@@ -3,7 +3,7 @@
 // Definitions by: zoetrope <https://github.com/zoetrope>, Igor Oleinikov <https://github.com/Igorbek>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
-///<reference types="rx-lite" />
+/// <reference types="rx-lite" />
 
 declare namespace Rx {
     interface ObservableStatic {
diff --git a/types/rx-lite-backpressure/index.d.ts b/types/rx-lite-backpressure/index.d.ts
index fa997f03c6..73e9f2e8d1 100644
--- a/types/rx-lite-backpressure/index.d.ts
+++ b/types/rx-lite-backpressure/index.d.ts
@@ -3,7 +3,7 @@
 // Definitions by: Igor Oleinikov <https://github.com/Igorbek>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
-///<reference types="rx-lite"/>
+/// <reference types="rx-lite" />
 
 declare namespace Rx {
     interface Observable<T> {
diff --git a/types/rx-lite-coincidence/index.d.ts b/types/rx-lite-coincidence/index.d.ts
index 3682126071..7649b234be 100644
--- a/types/rx-lite-coincidence/index.d.ts
+++ b/types/rx-lite-coincidence/index.d.ts
@@ -3,7 +3,7 @@
 // Definitions by: Carl de Billy <http://carl.debilly.net/>, Igor Oleinikov <https://github.com/Igorbek>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
-///<reference types="rx-lite" />
+/// <reference types="rx-lite" />
 
 declare namespace Rx {
     interface Observable<T> {
diff --git a/types/rx-lite-time/index.d.ts b/types/rx-lite-time/index.d.ts
index e5abaf3832..e1cf93dc07 100644
--- a/types/rx-lite-time/index.d.ts
+++ b/types/rx-lite-time/index.d.ts
@@ -3,7 +3,7 @@
 // Definitions by: Carl de Billy <http://carl.debilly.net/>, Igor Oleinikov <https://github.com/Igorbek>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
-///<reference types="rx-lite" />
+/// <reference types="rx-lite" />
 
 declare namespace Rx {
     interface Observable<T> {
diff --git a/types/rx-lite-virtualtime/index.d.ts b/types/rx-lite-virtualtime/index.d.ts
index 7413ec2604..1ff855f532 100644
--- a/types/rx-lite-virtualtime/index.d.ts
+++ b/types/rx-lite-virtualtime/index.d.ts
@@ -3,7 +3,7 @@
 // Definitions by: gsino <http://www.codeplex.com/site/users/view/gsino>, Igor Oleinikov <https://github.com/Igorbek>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
-///<reference types="rx-lite" />
+/// <reference types="rx-lite" />
 
 declare namespace Rx {
     interface VirtualTimeScheduler<TAbsolute, TRelative> extends Scheduler {