diff --git a/src/json.c b/src/json.c
index 18495a42..e6a25abe 100644
--- a/src/json.c
+++ b/src/json.c
@@ -5,7 +5,6 @@
 #include "math.h"
 
 /* Non-standard-conforming JSON parser.
- *  - Unicode not supported (TODO)
  *  - Unicode escape sequences in strings (\u) not supported
  *  - Leading 0s in numbers are allowed
  */
@@ -787,7 +786,7 @@ INTERNAL void parse(struct arena *arena, struct parser *p)
             ++stack_count;
 
             /* Create child & push to stack */
-            struct json *child = arena_push(arena, struct json);
+            struct json *child = arena_push_zero(arena, struct json);
             child->parent = json;
             *arena_push(scratch.arena, struct json *) = child;
             ++stack_count;
@@ -795,7 +794,7 @@ INTERNAL void parse(struct arena *arena, struct parser *p)
             /* Check for comma  */
             if (at->type == TOKEN_TYPE_COMMA) {
                 /* Create sibling & push to stack */
-                struct json *sibling = arena_push(arena, struct json);
+                struct json *sibling = arena_push_zero(arena, struct json);
                 sibling->parent = parent_json;
                 *arena_push(scratch.arena, struct json *) = sibling;
                 ++stack_count;