diff --git a/libc/include/sys/mman.h b/libc/include/sys/mman.h
index 9a2ec35..1440dc6 100644
--- a/libc/include/sys/mman.h
+++ b/libc/include/sys/mman.h
@@ -43,7 +43,7 @@
 #define MREMAP_MAYMOVE  1
 #define MREMAP_FIXED    2
 
-#if defined(__USE_FILE_OFFSET64) && __ANDROID_API__ >= __ANDROID_API_L__
+#if defined(__USE_FILE_OFFSET64)
 void* mmap(void*, size_t, int, int, int, off_t) __RENAME(mmap64) __INTRODUCED_IN(21);
 #else
 void* mmap(void*, size_t, int, int, int, off_t);
@@ -71,7 +71,7 @@
  * Some third-party code uses the existence of POSIX_MADV_NORMAL to detect the
  * availability of posix_madvise. This is not correct, since having up-to-date
  * UAPI headers says nothing about the C library, but for the time being we
- * don't want to harm adoption to the unified headers.
+ * don't want to harm adoption of the unified headers.
  *
  * https://github.com/android-ndk/ndk/issues/395
  */
diff --git a/libc/include/sys/sendfile.h b/libc/include/sys/sendfile.h
index dccdec5..43b334c 100644
--- a/libc/include/sys/sendfile.h
+++ b/libc/include/sys/sendfile.h
@@ -34,9 +34,8 @@
 
 __BEGIN_DECLS
 
-#if defined(__USE_FILE_OFFSET64) && __ANDROID_API__ >= __ANDROID_API_L__
-ssize_t sendfile(int out_fd, int in_fd, off_t* offset, size_t count) __RENAME(sendfile64)
-  __INTRODUCED_IN(21);
+#if defined(__USE_FILE_OFFSET64)
+ssize_t sendfile(int out_fd, int in_fd, off_t* offset, size_t count) __RENAME(sendfile64) __INTRODUCED_IN(21);
 #else
 ssize_t sendfile(int out_fd, int in_fd, off_t* offset, size_t count);
 #endif
diff --git a/libc/include/sys/uio.h b/libc/include/sys/uio.h
index 0e56d7d..2611774 100644
--- a/libc/include/sys/uio.h
+++ b/libc/include/sys/uio.h
@@ -39,8 +39,8 @@
 
 #if defined(__USE_GNU)
 #if defined(__USE_FILE_OFFSET64)
-ssize_t preadv(int, const struct iovec*, int, off_t) __RENAME(preadv64);
-ssize_t pwritev(int, const struct iovec*, int, off_t) __RENAME(pwritev64);
+ssize_t preadv(int, const struct iovec*, int, off_t) __RENAME(preadv64) __INTRODUCED_IN(24);
+ssize_t pwritev(int, const struct iovec*, int, off_t) __RENAME(pwritev64) __INTRODUCED_IN(24);
 #else
 ssize_t preadv(int, const struct iovec*, int, off_t) __INTRODUCED_IN(24);
 ssize_t pwritev(int, const struct iovec*, int, off_t) __INTRODUCED_IN(24);