diff --git a/valdr/valdr-message-tests.ts b/valdr/valdr-message-tests.ts
index 7bb2da6b0f..ac16992dc2 100644
--- a/valdr/valdr-message-tests.ts
+++ b/valdr/valdr-message-tests.ts
@@ -1,7 +1,7 @@
 /// <reference path="valdr-message.d.ts" />
 
 function ValdrMessageTests() {
-    var valdrMessage: valdr.message.IValdrMessage;
+    var valdrMessage: valdr.message.ValdrMessage;
 
     valdrMessage.templateUrl = 'valdrMesssageTemplate.html';
     valdrMessage.translateAvailable = true;
@@ -15,7 +15,7 @@ function ValdrMessageTests() {
 }
 
 function ValdrMessageProviderTests() {
-    var valdrMessageProvider: valdr.message.IValdrMessageProvider;
+    var valdrMessageProvider: valdr.message.ValdrMessageProvider;
     valdrMessageProvider.setTemplate('<div class="valdr-message" > {{ violation.message }}</div>');
     valdrMessageProvider.setTemplateUrl('valdrMesssageTemplate.html');
     valdrMessageProvider.addMessages({
diff --git a/valdr/valdr-message.d.ts b/valdr/valdr-message.d.ts
index 2abaf99be2..b8c2a6673b 100644
--- a/valdr/valdr-message.d.ts
+++ b/valdr/valdr-message.d.ts
@@ -5,8 +5,8 @@
 
 declare namespace valdr.message {
 
-    interface IValdrMessage {
-        /**
+    interface ValdrMessage {
+        /*
          * Default message template URL.
          */
         templateUrl: string;
@@ -43,7 +43,7 @@ declare namespace valdr.message {
         getMessage(typeName: string, fieldName: string, validatorName: string): string;
     }
 
-    interface IValdrMessageProvider {
+    interface ValdrMessageProvider {
         /**
          * Sets the default message template.
          * @param template the default message template (eg "<div class="valdr-message">{{ violation.message }}</div>").
diff --git a/valdr/valdr-tests.ts b/valdr/valdr-tests.ts
index e0e1860718..eb263223d3 100644
--- a/valdr/valdr-tests.ts
+++ b/valdr/valdr-tests.ts
@@ -1,7 +1,7 @@
 /// <reference path="valdr.d.ts" />
 
 function ValdrTests() {
-    var valdr: valdr.IValdr;
+    var valdr: valdr.Valdr;
     var validation = valdr.validate('person', 'lastName', 'test');
     valdr.addConstraints({
         'person': {
@@ -21,7 +21,7 @@ function ValdrTests() {
 }
 
 function ValdrProviderTests() {
-    var valdrProvider: valdr.IValdrProvider;
+    var valdrProvider: valdr.ValdrProvider;
     valdrProvider.addConstraints({
         'person': {
             'lastName': {
diff --git a/valdr/valdr.d.ts b/valdr/valdr.d.ts
index 29ac2116d2..5df4d13aa0 100644
--- a/valdr/valdr.d.ts
+++ b/valdr/valdr.d.ts
@@ -5,7 +5,7 @@
 
 declare namespace valdr {
 
-    interface IValdr {
+    interface Valdr {
         /**
          * Validates the value of the given type with the constraints for the given field name.
          * @param typeName the type name.
@@ -40,7 +40,7 @@ declare namespace valdr {
         setClasses(newClasses: { valid: string, invalid: string }): void;
     }
 
-    interface IValdrProvider {
+    interface ValdrProvider {
         /**
          * Adds a new list of constraints (JSON Object).
          * @param newConstraints the list of constraints (JSON Object).