diff --git a/src/pdumper.c b/src/pdumper.c
index 7e6047e6a95..85adf4147f9 100644
--- a/src/pdumper.c
+++ b/src/pdumper.c
@@ -2747,7 +2747,7 @@ dump_hash_table (struct dump_context *ctx,
 static dump_off
 dump_buffer (struct dump_context *ctx, const struct buffer *in_buffer)
 {
-#if CHECK_STRUCTS && !defined HASH_buffer_85D317CE74
+#if CHECK_STRUCTS && !defined HASH_buffer_6C25F9C3BC
 # error "buffer changed. See CHECK_STRUCTS comment in config.h."
 #endif
   struct buffer munged_buffer = *in_buffer;