diff --git a/tests/tests.cpp b/tests/tests.cpp
index 29a35a75..f8465a0c 100644
--- a/tests/tests.cpp
+++ b/tests/tests.cpp
@@ -332,6 +332,7 @@ test_rmdir()
   int file2_fd;
   file2_fd = openat(dir_fd,"test-file",O_CREAT|O_EXCL,0555);
   TEST_CHECK(file2_fd >= 0);
+  TEST_MSG("expected: 0; got: %d:%d:%s",rv,errno,strerror(errno));
 
   struct stat st;
   rv = fstatat(file_fd,"",&st,AT_EMPTY_PATH);