diff --git a/src/getchar.c b/src/getchar.c
index c0cfd92..0f81979 100644
--- a/src/getchar.c
+++ b/src/getchar.c
@@ -413,6 +413,7 @@
 	 && readbuf2.bh_first.b_next == NULL);
 }
 
+#if defined(FEAT_EVAL) || defined(PROTO)
 /*
  * Return TRUE if readbuf1 is empty.  There may still be redo characters in
  * redbuf2.
@@ -422,6 +423,7 @@
 {
     return (readbuf1.bh_first.b_next == NULL);
 }
+#endif
 
 /*
  * Set a typeahead character that won't be flushed.