Index: libcfa/src/concurrency/io.cfa
===================================================================
--- libcfa/src/concurrency/io.cfa	(revision 9153e5370a82dc2542a0fd49bd859ac5a6502595)
+++ libcfa/src/concurrency/io.cfa	(revision ec19b2171931b3e9038fdd36c53a98082976398c)
@@ -749,5 +749,5 @@
 		__cfaabi_dbg_debug_do(
 			memset(sqe, 0xde, sizeof(*sqe));
-			sqe->opcode = IORING_OP_LAST;
+			sqe->opcode = (sizeof(opcodes) / sizeof(const char *)) - 1;
 		);
 
Index: libcfa/src/concurrency/io/call.cfa.in
===================================================================
--- libcfa/src/concurrency/io/call.cfa.in	(revision 9153e5370a82dc2542a0fd49bd859ac5a6502595)
+++ libcfa/src/concurrency/io/call.cfa.in	(revision ec19b2171931b3e9038fdd36c53a98082976398c)
@@ -231,5 +231,5 @@
 		sqe->addr = 0;
 		sqe->len = 0;
-		sqe->accept_flags = 0;
+		sqe->fsync_flags = 0;
 		sqe->__pad2[0] = 0;
 		sqe->__pad2[1] = 0;
Index: libcfa/src/concurrency/io/setup.cfa
===================================================================
--- libcfa/src/concurrency/io/setup.cfa	(revision 9153e5370a82dc2542a0fd49bd859ac5a6502595)
+++ libcfa/src/concurrency/io/setup.cfa	(revision ec19b2171931b3e9038fdd36c53a98082976398c)
@@ -398,6 +398,5 @@
 			const __u32 num = *sq.num;
 			for( i; num ) {
-				sq.sqes[i].opcode = IORING_OP_LAST;
-				sq.sqes[i].user_data = 3ul64;
+				__sqe_clean( &sq.sqes[i] );
 			}
 		}