diff --git a/src/os_win32.c b/src/os_win32.c
index 5d544b2..644e647 100644
--- a/src/os_win32.c
+++ b/src/os_win32.c
@@ -4531,7 +4531,7 @@
 			}
 		    }
 
-		    term_replace_bs_del_keycode(ta_buf, ta_len, len);
+		    len = term_replace_bs_del_keycode(ta_buf, ta_len, len);
 
 		    /*
 		     * For pipes: echo the typed characters.  For a pty this