1 files changed, 0 insertions, 4 deletions

diff --git a/src/process.c b/src/process.c
index 210287a85f1..c8f329c244b 100644
--- a/src/process.c
+++ b/src/process.c
@@ -164,10 +164,6 @@ extern Lisp_Object QCfilter;
 
 extern const char *get_operating_system_release (void);
 
-/* From sysdep.c or w32.c  */
-extern int serial_open (char *port);
-extern void serial_configure (struct Lisp_Process *p, Lisp_Object contact);
-
 #ifndef HAVE_H_ERRNO
 extern int h_errno;
 #endif