diff --git a/src/globals.h b/src/globals.h
index 9180bef..5dfb6ff 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -758,6 +758,9 @@
 EXTERN int	sc_col;		// column for shown command
 
 #ifdef TEMPDIRNAMES
+# if defined(UNIX) && defined(HAVE_FLOCK) && defined(HAVE_DIRFD)
+EXTERN DIR	*vim_tempdir_dp INIT(= NULL); // File descriptor of temp dir
+# endif
 EXTERN char_u	*vim_tempdir INIT(= NULL); // Name of Vim's own temp dir.
 					   // Ends in a slash.
 #endif