el no longer has to be used in loop
diff --git a/include/list.h b/include/list.h
index a0f23c8..d9cd9d3 100644
--- a/include/list.h
+++ b/include/list.h
@@ -107,6 +107,7 @@
     if (!el_box) FATAL("foreach over uninitialized list"); \
     while (el_box != head) {                               \
                                                            \
+      __attribute__((unused))                              \
       type *el = (type *)((el_box)->data);                 \
       /* get next so el_box can be unlinked */             \
       element_t *next = el_box->next;                      \