diff --git a/libc/Android.mk b/libc/Android.mk
index 5e86dac..4866f68 100644
--- a/libc/Android.mk
+++ b/libc/Android.mk
@@ -45,7 +45,6 @@
     bionic/ether_ntoa.c \
     bionic/ftime.c \
     bionic/fts.c \
-    bionic/getdtablesize.c \
     bionic/gethostname.c \
     bionic/getpriority.c \
     bionic/getpt.c \
diff --git a/libc/bionic/getdtablesize.c b/libc/bionic/getdtablesize.c
deleted file mode 100644
index 91315a5..0000000
--- a/libc/bionic/getdtablesize.c
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * Copyright (C) 2008 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-#include <sys/resource.h>
-#include <sys/sysconf.h>
-
-int getdtablesize()
-{
-    struct rlimit r;
-
-    if (getrlimit(RLIMIT_NOFILE, &r) < 0) {
-        return sysconf(_SC_OPEN_MAX);
-    }
-    return r.rlim_cur;
-}
diff --git a/libc/bionic/ndk_cruft.cpp b/libc/bionic/ndk_cruft.cpp
index 4834d6e..43078fd 100644
--- a/libc/bionic/ndk_cruft.cpp
+++ b/libc/bionic/ndk_cruft.cpp
@@ -255,4 +255,15 @@
   return wait4(-1, status, options, rusage);
 }
 
+// This was removed from POSIX 2004.
+extern "C" int getdtablesize() {
+  struct rlimit r;
+
+  if (getrlimit(RLIMIT_NOFILE, &r) < 0) {
+    return sysconf(_SC_OPEN_MAX);
+  }
+
+  return r.rlim_cur;
+}
+
 #endif
diff --git a/libc/include/unistd.h b/libc/include/unistd.h
index ee6d7b1..afe5f1a 100644
--- a/libc/include/unistd.h
+++ b/libc/include/unistd.h
@@ -164,8 +164,6 @@
 
 extern int gethostname(char *, size_t);
 
-extern int getdtablesize(void);
-
 extern void *__brk(void *);
 extern int brk(void *);
 extern void *sbrk(ptrdiff_t);