diff --git a/winsup/cygwin/fhandler.cc b/winsup/cygwin/fhandler.cc
index 4210510be..d754077b1 100644
--- a/winsup/cygwin/fhandler.cc
+++ b/winsup/cygwin/fhandler.cc
@@ -1754,7 +1754,6 @@ fhandler_base::closedir (DIR *)
 int
 fhandler_base::fchmod (mode_t mode)
 {
-  extern int chmod_device (path_conv& pc, mode_t mode);
   if (pc.is_fs_special ())
     return chmod_device (pc, mode);
   /* By default, just succeeds. */
diff --git a/winsup/cygwin/fhandler_disk_file.cc b/winsup/cygwin/fhandler_disk_file.cc
index 32381a0b0..197f04f58 100644
--- a/winsup/cygwin/fhandler_disk_file.cc
+++ b/winsup/cygwin/fhandler_disk_file.cc
@@ -698,7 +698,6 @@ out:
 int __reg1
 fhandler_disk_file::fchmod (mode_t mode)
 {
-  extern int chmod_device (path_conv& pc, mode_t mode);
   int ret = -1;
   int oret = 0;
   NTSTATUS status;
diff --git a/winsup/cygwin/winsup.h b/winsup/cygwin/winsup.h
index de9bfacda..887d54fa6 100644
--- a/winsup/cygwin/winsup.h
+++ b/winsup/cygwin/winsup.h
@@ -178,6 +178,7 @@ extern struct per_process_cxx_malloc default_cygwin_cxx_malloc;
 /* various events */
 void events_init ();
 
+int chmod_device (class path_conv& pc, mode_t mode);
 void __stdcall close_all_files (bool = false);
 
 /* debug_on_trap support. see exceptions.cc:try_to_debug() */