1 files changed, 1 insertions, 0 deletions

diff --git a/src/sysstdio.h b/src/sysstdio.h
index 3ff1d6a572a..a2364c4e1fb 100644
--- a/src/sysstdio.h
+++ b/src/sysstdio.h
@@ -24,6 +24,7 @@ along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.  */
 #include <stdio.h>
 
 extern FILE *emacs_fopen (char const *, char const *);
+extern void close_output_streams (void);
 
 #if O_BINARY
 # define FOPEN_BINARY "b"