2 files changed, 2 insertions, 0 deletions

diff --git a/nt/ChangeLog b/nt/ChangeLog
index df6a42595ad..8cb9594d4d0 100644
--- a/nt/ChangeLog
+++ b/nt/ChangeLog
@@ -1,6 +1,7 @@
 2012-12-08  Eli Zaretskii  <eliz@gnu.org>
 
         * inc/ms-w32.h (putenv): Redirect to sys_putenv.
+        (sys_putenv): Add prototype.
 
         * config.nt (HAVE_UNSETENV): Define to 1.
 
diff --git a/nt/inc/ms-w32.h b/nt/inc/ms-w32.h
index 1cbcb7f88f3..3d68efb804d 100644
--- a/nt/inc/ms-w32.h
+++ b/nt/inc/ms-w32.h
@@ -381,6 +381,7 @@ extern char *get_emacs_configuration_options (void);
 # undef putenv
 #endif
 #define putenv    sys_putenv
+extern int sys_putenv (char *);
 
 extern int getloadavg (double *, int);
 extern int getpagesize (void);