diff --git a/include/json_entities/json_entities.h b/include/json_entities/json_entities.h
index 03fb0e7..5e96018 100644
--- a/include/json_entities/json_entities.h
+++ b/include/json_entities/json_entities.h
@@ -11,6 +11,7 @@ typedef struct json_value jval_t;
 typedef struct json_pair jpair_t;
 
 typedef enum {
+  JVAL_EMPTY,
   JVAL_COLLECTION,
   JVAL_STRING,
   JVAL_INTEGER,
@@ -22,6 +23,7 @@ typedef enum {
 struct json_value {
   jval_type type;
   union {
+    void *null_val;
     jcoll_t *collection;
     dstr_t *string;
     i64 num_int;