Tor Arntsen spotted this mistake
diff --git a/tests/server/sws.c b/tests/server/sws.c
index f9fcd6c..9e63e50 100644
--- a/tests/server/sws.c
+++ b/tests/server/sws.c
@@ -865,7 +865,7 @@
     msgsock = accept(sock, NULL, NULL);
 
     if (CURL_SOCKET_BAD == msgsock) {
-      printf("MAJOR ERROR: accept() failed with error: &d\n", errno);
+      printf("MAJOR ERROR: accept() failed with error: %d\n", errno);
       break;
     }