diff --git a/prism_compile.c b/prism_compile.c
index 71fd05dddf..24a102cd6b 100644
--- a/prism_compile.c
+++ b/prism_compile.c
@@ -1757,6 +1757,9 @@ pm_compile_node(rb_iseq_t *iseq, const pm_node_t *node, LINK_ANCHOR *const ret,
         return;
       }
       case PM_ARGUMENTS_NODE: {
+        // These are ArgumentsNodes that are not compiled directly by their
+        // parent call nodes, used in the cases of NextNodes, ReturnNodes
+        // and BreakNodes
         pm_arguments_node_t *arguments_node = (pm_arguments_node_t *) node;
         pm_node_list_t node_list = arguments_node->arguments;
         for (size_t index = 0; index < node_list.size; index++) {