diff --git a/sysdeps/mach/hurd/open.c b/sysdeps/mach/hurd/open.c
index bdfed5e311..519789f22f 100644
--- a/sysdeps/mach/hurd/open.c
+++ b/sysdeps/mach/hurd/open.c
@@ -19,6 +19,7 @@
 #include <errno.h>
 #include <fcntl.h>
 #include <stdarg.h>
+#include <stdio.h>
 #include <hurd.h>
 #include <hurd/fd.h>
 
@@ -52,8 +53,20 @@ weak_alias (__libc_open, __open)
 libc_hidden_weak (__open)
 weak_alias (__libc_open, open)
 
+int
+__open_2 (file, oflag)
+     const char *file;
+     int oflag;
+{
+  if (oflag & O_CREAT)
+    __fortify_fail ("invalid open call: O_CREAT without mode");
+
+  return __open (file, oflag);
+}
+
 /* open64 is just the same as open for us.  */
 weak_alias (__libc_open, __libc_open64)
 weak_alias (__libc_open, __open64)
 libc_hidden_weak (_open64)
 weak_alias (__libc_open, open64)
+strong_alias (__open_2, __open64_2)
diff --git a/sysdeps/mach/hurd/openat.c b/sysdeps/mach/hurd/openat.c
index 1faf857e16..f0a3404cd8 100644
--- a/sysdeps/mach/hurd/openat.c
+++ b/sysdeps/mach/hurd/openat.c
@@ -21,6 +21,7 @@
 #include <fcntl.h>
 #include <stdarg.h>
 #include <stddef.h>
+#include <stdio.h>
 #include <sys/stat.h>
 #include <hurd.h>
 #include <hurd/fd.h>
@@ -56,7 +57,20 @@ __openat (fd, file, oflag)
 libc_hidden_def (__openat)
 weak_alias (__openat, openat)
 
+int
+__openat_2 (fd, file, oflag)
+     int fd;
+     const char *file;
+     int oflag;
+{
+  if (oflag & O_CREAT)
+    __fortify_fail ("invalid openat call: O_CREAT without mode");
+
+  return __openat (fd, file, oflag);
+}
+
 /* openat64 is just the same as openat for us.  */
 weak_alias (__openat, __openat64)
 libc_hidden_weak (__openat64)
 weak_alias (__openat, openat64)
+strong_alias (__openat_2, __openat64_2)