diff --git a/bootstrap/bootstrap.d.ts b/bootstrap/bootstrap.d.ts
index c06c08f89e..47ef378fd9 100644
--- a/bootstrap/bootstrap.d.ts
+++ b/bootstrap/bootstrap.d.ts
@@ -7,16 +7,16 @@
 /// <reference path="../jquery/jquery.d.ts"/>
 
 interface ModalOptions {
-    backdrop?: bool;
-    keyboard?: bool;
-    show?: bool;
+    backdrop?: boolean;
+    keyboard?: boolean;
+    show?: boolean;
     remote?: string;
 }
 
 interface ModalOptionsBackdropString {
     backdrop?: string; // for "static"
-    keyboard?: bool;
-    show?: bool;
+    keyboard?: boolean;
+    show?: boolean;
     remote?: string;
 }
 
@@ -25,8 +25,8 @@ interface ScrollSpyOptions {
 }
 
 interface TooltipOptions {
-    animation?: bool;
-    html?: bool;
+    animation?: boolean;
+    html?: boolean;
     placement?: any;
     selector?: string;
     title?: any;
@@ -35,8 +35,8 @@ interface TooltipOptions {
 }
 
 interface PopoverOptions {
-    animation?: bool;
-    html?: bool;
+    animation?: boolean;
+    html?: boolean;
     placement?: any;
     selector?: string;
     trigger?: string;
@@ -47,7 +47,7 @@ interface PopoverOptions {
 
 interface CollapseOptions {
     parent?: any;    
-    toggle?: bool;
+    toggle?: boolean;
 }
 
 interface CarouselOptions {