1 files changed, 6 insertions, 1 deletions
diff --git a/py/objlist.c b/py/objlist.c
index 8c989facc..f431e273d 100644
--- a/py/objlist.c
+++ b/py/objlist.c
@@ -44,13 +44,18 @@ STATIC mp_obj_t list_pop(size_t n_args, const mp_obj_t *args);
 
 STATIC void list_print(const mp_print_t *print, mp_obj_t o_in, mp_print_kind_t kind) {
     mp_obj_list_t *o = MP_OBJ_TO_PTR(o_in);
+    const char *item_separator = ", ";
     if (!(MICROPY_PY_UJSON && kind == PRINT_JSON)) {
         kind = PRINT_REPR;
+    } else {
+        #if MICROPY_PY_UJSON_SEPARATORS
+        item_separator = MP_PRINT_GET_EXT(print)->item_separator;
+        #endif
     }
     mp_print_str(print, "[");
     for (size_t i = 0; i < o->len; i++) {
         if (i > 0) {
-            mp_print_str(print, ", ");
+            mp_print_str(print, item_separator);
         }
         mp_obj_print_helper(print, o->items[i], kind);
     }