diff -r 1562bdf948da -r 1b4fa55f7caa src/cx/kv_list.h
--- a/src/cx/kv_list.h	Wed Sep 17 22:45:00 2025 +0200
+++ b/src/cx/kv_list.h	Thu Sep 18 00:36:42 2025 +0200
@@ -329,9 +329,9 @@
  * @param key (@c CxHashKey, @c char*, @c cxstring, or @c cxmutstr) the key
  * @param value (@c void*) the value
  * @retval zero success
- * @retval non-zero memory allocation failure or the index is out of bounds
+ * @retval non-zero memory allocation failure
  */
-#define cxKvListAdd(list, index, key, value) cxKvListInsert(list, list->collection.size, key, value)
+#define cxKvListAdd(list, key, value) cxKvListInsert(list, (list)->collection.size, key, value)
 
 #ifdef __cplusplus
 } // extern "C"