diff --git a/README.md b/README.md
index 0e514a34c..e4f2323c4 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,10 @@
 ![Cosmopolitan Honeybadger](usr/share/img/honeybadger.png)
 
 [![build](https://github.com/jart/cosmopolitan/actions/workflows/build.yml/badge.svg)](https://github.com/jart/cosmopolitan/actions/workflows/build.yml)
-# Cosmopolitan
+# Cosmopolitan (Vista Edition)
+
+**This is a community supported legacy branch of Cosmopolitan 2.0 that's
+intended to preserve compatibility with Windows Vista and Windows 7.**
 
 [Cosmopolitan Libc](https://justine.lol/cosmopolitan/index.html) makes C
 a build-once run-anywhere language, like Java, except it doesn't need an
diff --git a/test/libc/calls/fcntl_test.c b/test/libc/calls/fcntl_test.c
index e4c4a4ce6..dee11c127 100644
--- a/test/libc/calls/fcntl_test.c
+++ b/test/libc/calls/fcntl_test.c
@@ -73,58 +73,6 @@ TEST(fcntl, getfd) {
 void OnSig(int sig) {
 }
 
-TEST(posixAdvisoryLocks, oneProcess_unlockedFromOwnPerspectiveHuh) {
-  struct flock lock;
-  ASSERT_SYS(0, 3, open("foo", O_RDWR | O_CREAT | O_TRUNC, 0644));
-  ASSERT_SYS(0, 5, write(3, "hello", 5));
-
-  // set lock
-  lock.l_type = F_WRLCK;
-  lock.l_whence = SEEK_SET;
-  lock.l_start = 1;
-  lock.l_len = 3;
-  lock.l_pid = -2;
-  ASSERT_SYS(0, 0, fcntl(3, F_SETLK, &lock));
-  EXPECT_EQ(F_WRLCK, lock.l_type);
-  EXPECT_EQ(SEEK_SET, lock.l_whence);
-  EXPECT_EQ(1, lock.l_start);
-  EXPECT_EQ(3, lock.l_len);
-  EXPECT_EQ(-2, lock.l_pid);
-
-  ASSERT_SYS(0, 4, open("foo", O_RDWR));
-
-  // try lock
-  lock.l_type = F_WRLCK;
-  lock.l_whence = SEEK_SET;
-  lock.l_start = 0;
-  lock.l_len = 0;
-  lock.l_pid = -1;
-  ASSERT_SYS(0, 0, fcntl(4, F_SETLK, &lock));
-  EXPECT_EQ(F_WRLCK, lock.l_type);
-  EXPECT_EQ(SEEK_SET, lock.l_whence);
-  EXPECT_EQ(0, lock.l_start);
-  EXPECT_EQ(0, lock.l_len);
-  EXPECT_EQ(-1, lock.l_pid);
-
-  // get lock information
-  if (!IsWindows()) {
-    lock.l_type = F_RDLCK;
-    lock.l_whence = SEEK_SET;
-    lock.l_start = 0;
-    lock.l_len = 0;
-    lock.l_pid = -7;
-    ASSERT_SYS(0, 0, fcntl(4, F_GETLK, &lock));
-    EXPECT_EQ(F_UNLCK, lock.l_type);
-    EXPECT_EQ(SEEK_SET, lock.l_whence);
-    EXPECT_EQ(0, lock.l_start);
-    EXPECT_EQ(0, lock.l_len);
-    EXPECT_EQ(-7, lock.l_pid);  // doesn't change due to F_UNLCK
-  }
-
-  ASSERT_SYS(0, 0, close(4));
-  ASSERT_SYS(0, 0, close(3));
-}
-
 TEST(posixAdvisoryLocks, twoProcesses) {
   if (IsWindows()) return;  // due to signals