diff --git a/include/mastodont_list.h b/include/mastodont_list.h
index 6fd3a3d..1833bbd 100644
--- a/include/mastodont_list.h
+++ b/include/mastodont_list.h
@@ -94,6 +94,6 @@ int mastodont_list_remove_accounts(mastodont_t* api,
                                    struct mstdnt_storage* storage);
 
 // Cleanup
-void mstdnt_cleanup_lists(struct mstdnt_list* lists, size_t len);
+void mstdnt_cleanup_lists(struct mstdnt_list* lists);
 
 #endif /* MASTODONT_LIST_H */
diff --git a/src/list.c b/src/list.c
index 978e865..49e4dfb 100644
--- a/src/list.c
+++ b/src/list.c
@@ -305,8 +305,7 @@ int mastodont_list_get_accounts(mastodont_t* data,
     return mastodont_request(data, &req_args);
 }
 
-void mstdnt_cleanup_lists(struct mstdnt_list* lists, size_t len)
+void mstdnt_cleanup_lists(struct mstdnt_list* lists)
 {
-    if (!lists) return;
     free(lists);
 }