diff --git a/gradlew b/gradlew
old mode 100644
new mode 100755
diff --git a/src/main/java/org/json/JSONObject.java b/src/main/java/org/json/JSONObject.java
index 29b1115b8..153aa6bec 100644
--- a/src/main/java/org/json/JSONObject.java
+++ b/src/main/java/org/json/JSONObject.java
@@ -77,7 +77,7 @@
 public class JSONObject implements Iterable<String> {
     @Override
     public Iterator<String> iterator() {
-        return null;
+        return keys();
     }
 
     @Override