diff --git a/requirejs/require.d.ts b/requirejs/require.d.ts
index 1d6934041..e9351aa46 100644
--- a/requirejs/require.d.ts
+++ b/requirejs/require.d.ts
@@ -202,5 +202,5 @@ interface RequireDefine {
 }
 
 // Ambient declarations for 'require' and 'define'
-var require: Require;
-var define: RequireDefine;
+declare var require: Require;
+declare var define: RequireDefine;