diff --git a/requirejs/require.d.ts b/requirejs/require.d.ts
index 711321b7df..109c0b1ae6 100644
--- a/requirejs/require.d.ts
+++ b/requirejs/require.d.ts
@@ -81,11 +81,11 @@ interface RequireConfig {
 	// If set to true, an error will be thrown if a script loads
 	// that does not call define() or have shim exports string
 	// value that can be checked.
-	enforceDefine?: bool;
+	enforceDefine?: boolean;
 
 	// If set to true, document.createElementNS() will be used
 	// to create script elements.
-	xhtml?: bool;
+	xhtml?: boolean;
 
 	/**
 	* Extra query string arguments appended to URLs that RequireJS
@@ -204,7 +204,7 @@ interface RequireDefine {
 	* Defines whether require js supports multiple versions of jQuery being loaded
 	**/
 	amd: {
-		jQuery: bool;
+		jQuery: boolean;
 	};
 }
 
@@ -212,4 +212,4 @@ interface RequireDefine {
 declare var require: Require;
 declare var requirejs: Require;
 declare var req: Require;
-declare var define: RequireDefine;
+declare var define: RequireDefine;