1 files changed, 1 insertions, 1 deletions

diff --git a/src/buffer.h b/src/buffer.h
index ac7c5a54679..46c7c6e5ad6 100644
--- a/src/buffer.h
+++ b/src/buffer.h
@@ -504,7 +504,7 @@ struct buffer_text
 
 struct buffer
 {
-  struct vectorlike_header header;
+  union vectorlike_header header;
 
   /* The name of this buffer.  */
   Lisp_Object name_;