diff -r f4d93355b054 -r f727a21497bb src/server/test/testutils.c
--- a/src/server/test/testutils.c	Sun Jun 07 17:18:59 2020 +0200
+++ b/src/server/test/testutils.c	Sat Jul 11 17:58:00 2020 +0200
@@ -156,10 +156,10 @@
     }
     stream->buf = ucx_buffer_new(NULL, size, flags);
     
-    stream->io.write = test_io_write;
-    stream->io.writev = test_io_writev;
-    stream->io.close = test_io_close;
-    stream->io.finish = test_io_finish;
+    stream->io.st.write = test_io_write;
+    stream->io.st.writev = test_io_writev;
+    stream->io.st.close = test_io_close;
+    stream->io.st.finish = test_io_finish;
     
     return stream;
 }