diff --git a/src/unix/tty.c b/src/unix/tty.c
index faf94716..49efee7f 100644
--- a/src/unix/tty.c
+++ b/src/unix/tty.c
@@ -140,7 +140,7 @@ uv_handle_type uv_guess_handle(uv_file file) {
 }
 
 
-void uv_tty_reset_mode() {
+void uv_tty_reset_mode(void) {
   if (orig_termios_fd >= 0) {
     tcsetattr(orig_termios_fd, TCSANOW, &orig_termios);
   }
diff --git a/src/win/tty.c b/src/win/tty.c
index adb66a62..92f4604c 100644
--- a/src/win/tty.c
+++ b/src/win/tty.c
@@ -1865,7 +1865,7 @@ void uv_process_tty_connect_req(uv_loop_t* loop, uv_tty_t* handle,
 }
 
 
-void uv_tty_reset_mode() {
+void uv_tty_reset_mode(void) {
   /* Not necessary to do anything. */
   ;
 }