Index: libcfa/src/concurrency/io.cfa
===================================================================
--- libcfa/src/concurrency/io.cfa	(revision 04423b5394b85565e102fcce49521594f036ac1a)
+++ libcfa/src/concurrency/io.cfa	(revision b982fb29a831236e23284cedba72f1217cf401a0)
@@ -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) {