diff --git a/modules/angular2/src/change_detection/change_detection_jit_generator.ts b/modules/angular2/src/change_detection/change_detection_jit_generator.ts
index 0af7db046d..98f4876496 100644
--- a/modules/angular2/src/change_detection/change_detection_jit_generator.ts
+++ b/modules/angular2/src/change_detection/change_detection_jit_generator.ts
@@ -285,7 +285,7 @@ export class ChangeDetectorJITGenerator {
     `;
 
     if (r.isPureFunction()) {
-      var condition = `${this._changeNames.join(" || ")}`;
+      var condition = r.args.map((a) => this._changeNames[a]).join(" || ");
       return `if (${condition}) { ${check} }`;
     } else {
       return check;