diff --git a/libc/Android.bp b/libc/Android.bp
index 42ffd37..9265b4d 100644
--- a/libc/Android.bp
+++ b/libc/Android.bp
@@ -571,7 +571,6 @@
         "upstream-openbsd/lib/libc/stdio/fgetwc.c",
         "upstream-openbsd/lib/libc/stdio/fgetws.c",
         "upstream-openbsd/lib/libc/stdio/flags.c",
-        "upstream-openbsd/lib/libc/stdio/fpurge.c",
         "upstream-openbsd/lib/libc/stdio/fputwc.c",
         "upstream-openbsd/lib/libc/stdio/fputws.c",
         "upstream-openbsd/lib/libc/stdio/fvwrite.c",
diff --git a/libc/include/stdio_ext.h b/libc/include/stdio_ext.h
index 8b106a6..53589ec 100644
--- a/libc/include/stdio_ext.h
+++ b/libc/include/stdio_ext.h
@@ -89,10 +89,8 @@
 /**
  * [__fpurge(3)](http://man7.org/linux/man-pages/man3/__fpurge.3.html) discards the contents of
  * the stream's buffer.
- *
- * Available since API level 23.
  */
-void __fpurge(FILE* _Nonnull __fp) __INTRODUCED_IN(23);
+void __fpurge(FILE* _Nonnull __fp) __RENAME(fpurge);
 
 /**
  * [__fpending(3)](http://man7.org/linux/man-pages/man3/__fpending.3.html) returns the number of
diff --git a/libc/stdio/stdio.cpp b/libc/stdio/stdio.cpp
index f18cd81..37b9665 100644
--- a/libc/stdio/stdio.cpp
+++ b/libc/stdio/stdio.cpp
@@ -1079,6 +1079,26 @@
   return __sflush(fp);
 }
 
+int fpurge(FILE* fp) {
+  CHECK_FP(fp);
+
+  ScopedFileLock sfl(fp);
+
+  if (fp->_flags == 0) {
+    // Already freed!
+    errno = EBADF;
+    return EOF;
+  }
+
+  if (HASUB(fp)) FREEUB(fp);
+  WCIO_FREE(fp);
+  fp->_p = fp->_bf._base;
+  fp->_r = 0;
+  fp->_w = fp->_flags & (__SLBF | __SNBF) ? 0 : fp->_bf._size;
+  return 0;
+}
+__strong_alias(__fpurge, fpurge);
+
 size_t fread(void* buf, size_t size, size_t count, FILE* fp) {
   CHECK_FP(fp);
   ScopedFileLock sfl(fp);
diff --git a/libc/stdio/stdio_ext.cpp b/libc/stdio/stdio_ext.cpp
index 99a8af7..3eb2f33 100644
--- a/libc/stdio/stdio_ext.cpp
+++ b/libc/stdio/stdio_ext.cpp
@@ -59,10 +59,6 @@
   return (fp->_flags & __SLBF) != 0;
 }
 
-void __fpurge(FILE* fp) {
-  fpurge(fp);
-}
-
 size_t __fpending(FILE* fp) {
   return fp->_p - fp->_bf._base;
 }
diff --git a/libc/upstream-openbsd/lib/libc/stdio/fpurge.c b/libc/upstream-openbsd/lib/libc/stdio/fpurge.c
deleted file mode 100644
index 8dd8a91..0000000
--- a/libc/upstream-openbsd/lib/libc/stdio/fpurge.c
+++ /dev/null
@@ -1,62 +0,0 @@
-/*	$OpenBSD: fpurge.c,v 1.10 2015/08/31 02:53:57 guenther Exp $ */
-/*-
- * Copyright (c) 1990, 1993
- *	The Regents of the University of California.  All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Chris Torek.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. 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.
- * 3. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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 <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include "local.h"
-
-/*
- * fpurge: like fflush, but without writing anything: leave the
- * given FILE's buffer empty.
- */
-int
-fpurge(FILE *fp)
-{
-	FLOCKFILE(fp);
-	if (!fp->_flags) {
-		FUNLOCKFILE(fp);
-		errno = EBADF;
-		return(EOF);
-	}
-
-	if (HASUB(fp))
-		FREEUB(fp);
-	WCIO_FREE(fp);
-	fp->_p = fp->_bf._base;
-	fp->_r = 0;
-	fp->_w = fp->_flags & (__SLBF|__SNBF) ? 0 : fp->_bf._size;
-	FUNLOCKFILE(fp);
-	return (0);
-}
-DEF_WEAK(fpurge);