Index: libcfa/src/concurrency/io.cfa
===================================================================
--- libcfa/src/concurrency/io.cfa	(revision 290553a54a5500f937216fcdee0d5dab8d5826bc)
+++ libcfa/src/concurrency/io.cfa	(revision d5631b3ed1950913233bb5192a0e073e7b47bc77)
@@ -134,5 +134,5 @@
 		int ret = 0;
 		if( need_sys_to_submit || need_sys_to_complete ) {
-			ret = syscall( __NR_io_uring_enter, ring.fd, to_submit, 0, flags, 0p, _NSIG / 8);
+			ret = syscall( __NR_io_uring_enter, ring.fd, to_submit, 0, flags, (sigset_t *)0p, _NSIG / 8);
 			if( ret < 0 ) {
 				switch((int)errno) {