diff --git a/tiny-json.c b/tiny-json.c
index 12a1b9a..cf0f7d2 100644
--- a/tiny-json.c
+++ b/tiny-json.c
@@ -300,11 +300,12 @@ static char* numValue( char* ptr, json_t* property ) {
   * @param property The handler of the property to be added. */
 static void add( json_t* obj, json_t* property ) {
     property->sibling = 0;
-    if ( !obj->u.child ) obj->u.child = property;
-    else {
-        json_t* iter;
-        for( iter = obj->u.child; iter->sibling; iter = iter->sibling );
-        iter->sibling = property;
+    if ( !obj->u.child ){
+	    obj->u.child = property;
+	    obj->u.last_child = property;
+    } else {
+	    obj->u.last_child->sibling = property;
+	    obj->u.last_child = property;
     }
 }
 
diff --git a/tiny-json.h b/tiny-json.h
index 78e4e19..365ce7a 100644
--- a/tiny-json.h
+++ b/tiny-json.h
@@ -43,7 +43,10 @@ typedef struct json_s {
     char const* name;
     union {
         char const* value;
-        struct json_s* child;
+	    struct {
+		    struct json_s* child;
+		    struct json_s* last_child;
+	    };
     } u;
     jsonType_t type;
 } json_t;