diff --git a/chai-jquery/chai-jquery.d.ts b/chai-jquery/chai-jquery.d.ts
index d038c76ff4..52fd4f3f5f 100644
--- a/chai-jquery/chai-jquery.d.ts
+++ b/chai-jquery/chai-jquery.d.ts
@@ -7,31 +7,31 @@
 
 declare module chai {
     interface NameValueRegexMatcher {
-        match(value: RegExp): bool;
+        match(value: RegExp): boolean;
     }
 
     interface NameValueMatcher {
-        (name: string, value?: string): bool;
+        (name: string, value?: string): boolean;
     }
 
     interface Have {
         attr: NameValueMatcher;
         css: NameValueMatcher;
         data: NameValueMatcher;
-        class(className: string): bool;
-        id(id: string): bool;
-        html(html: string): bool;
-        text(text: string): bool;
-        value(text: string): bool;
-        (selector: string): bool;
+        class(className: string): boolean;
+        id(id: string): boolean;
+        html(html: string): boolean;
+        text(text: string): boolean;
+        value(text: string): boolean;
+        (selector: string): boolean;
     }
 
     interface Be {
-        visible: bool;
-        hidden: bool;
-        selected: bool;
-        checked: bool;
-        disabled: bool;
-        (selector: string): bool;
+        visible: boolean;
+        hidden: boolean;
+        selected: boolean;
+        checked: boolean;
+        disabled: boolean;
+        (selector: string): boolean;
     }
 }