diff --git a/src/buffer.c b/src/buffer.c
index 6249005..4d07eb6 100644
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -575,6 +575,9 @@
     buf_T	*buf;
 {
     free_buffer_stuff(buf, TRUE);
+#ifdef FEAT_MZSCHEME
+    mzscheme_buffer_free(buf);
+#endif
 #ifdef FEAT_PERL
     perl_buf_free(buf);
 #endif