diff --git a/meson.build b/meson.build
index feedd1063..d8bdb5808 100644
--- a/meson.build
+++ b/meson.build
@@ -117,7 +117,7 @@ if cc.has_function('mkstemp', prefix : '#include <stdlib.h>')
   cdata.set('HAVE_MKSTEMP', 1)
 endif
 
-if cc.has_function('memfd_create', prefix : '#include <sys/mman.h>', args : [ '-D__USE_GNU' ])
+if cc.has_function('memfd_create', prefix : '#include <sys/mman.h>', args : [ '-D_GNU_SOURCE' ])
   cdata.set('HAVE_MEMFD_CREATE', 1)
 endif
 
diff --git a/src/pipewire/mem.c b/src/pipewire/mem.c
index dcd1fe4b0..4e17c3a05 100644
--- a/src/pipewire/mem.c
+++ b/src/pipewire/mem.c
@@ -21,6 +21,8 @@
 #define _GNU_SOURCE
 #endif
 
+#include "config.h"
+
 #include <string.h>
 #include <stddef.h>
 #include <stdio.h>
@@ -34,6 +36,7 @@
 #include <pipewire/log.h>
 #include <pipewire/mem.h>
 
+#ifndef HAVE_MEMFD_CREATE
 /*
  * No glibc wrappers exist for memfd_create(2), so provide our own.
  *
@@ -46,6 +49,7 @@ static inline int memfd_create(const char *name, unsigned int flags)
 {
 	return syscall(SYS_memfd_create, name, flags);
 }
+#endif
 
 /* memfd_create(2) flags */
 
diff --git a/src/pipewire/memfd-wrappers.h b/src/pipewire/memfd-wrappers.h
deleted file mode 100644
index 860e3960c..000000000
--- a/src/pipewire/memfd-wrappers.h
+++ /dev/null
@@ -1,62 +0,0 @@
-/* PipeWire
- * Copyright (C) 2016 Wim Taymans <wim.taymans@gmail.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- */
-
-#include <sys/syscall.h>
-#include <fcntl.h>
-
-#ifndef HAVE_MEMFD_CREATE
-/*
- * No glibc wrappers exist for memfd_create(2), so provide our own.
- *
- * Also define memfd fcntl sealing macros. While they are already
- * defined in the kernel header file <linux/fcntl.h>, that file as
- * a whole conflicts with the original glibc header <fnctl.h>.
- */
-
-static inline int
-memfd_create(const char *name, unsigned int flags) {
-	return syscall(SYS_memfd_create, name, flags);
-}
-#endif
-
-/* memfd_create(2) flags */
-
-#ifndef MFD_CLOEXEC
-#define MFD_CLOEXEC       0x0001U
-#endif
-
-#ifndef MFD_ALLOW_SEALING
-#define MFD_ALLOW_SEALING 0x0002U
-#endif
-
-/* fcntl() seals-related flags */
-
-#ifndef F_LINUX_SPECIFIC_BASE
-#define F_LINUX_SPECIFIC_BASE 1024
-#endif
-
-#ifndef F_ADD_SEALS
-#define F_ADD_SEALS (F_LINUX_SPECIFIC_BASE + 9)
-#define F_GET_SEALS (F_LINUX_SPECIFIC_BASE + 10)
-
-#define F_SEAL_SEAL     0x0001  /* prevent further seals from being set */
-#define F_SEAL_SHRINK   0x0002  /* prevent file from shrinking */
-#define F_SEAL_GROW     0x0004  /* prevent file from growing */
-#define F_SEAL_WRITE    0x0008  /* prevent writes */
-#endif