Index: libcfa/prelude/defines.hfa.in
===================================================================
--- libcfa/prelude/defines.hfa.in	(revision 850aff17345d3e7433f854ef3f1b65369f8016d8)
+++ libcfa/prelude/defines.hfa.in	(revision 2c1b7de5793ea9270680ce6df605c9e0b578624b)
@@ -141,4 +141,8 @@
 
 /* Defined if io_uring support is present when compiling libcfathread and
+   supports the flag IORING_REGISTER_IOWQ_MAX_WORKERS. */
+#undef CFA_HAVE_IORING_REGISTER_IOWQ_MAX_WORKERS
+
+/* Defined if io_uring support is present when compiling libcfathread and
    supports the flag IORING_SETUP_ATTACH_WQ. */
 #undef CFA_HAVE_IORING_SETUP_ATTACH_WQ