diff --git a/zdump/dfo.c b/zdump/dfo.c
index b6053720..d84445ea 100644
--- a/zdump/dfo.c
+++ b/zdump/dfo.c
@@ -52,7 +52,6 @@ void dfo_chunk_add(u64 start, u64 size, void *data, dfo_chunk_read_fn read_fn)
 	dfo_chunk = zg_alloc(sizeof(*dfo_chunk));
 	dfo_chunk->start = start;
 	dfo_chunk->end = start + size - 1;
-	dfo_chunk->size = size;
 	dfo_chunk->data = data;
 	dfo_chunk->read_fn = read_fn;
 	util_list_add_head(&l.dump.chunk_list, dfo_chunk);
diff --git a/zdump/dfo.h b/zdump/dfo.h
index 001cb841..c98ad9df 100644
--- a/zdump/dfo.h
+++ b/zdump/dfo.h
@@ -24,7 +24,6 @@ struct dfo_chunk {
 	struct util_list_node	list;
 	u64			start;
 	u64			end;
-	u64			size;
 	dfo_chunk_read_fn	read_fn;
 	void			*data;
 };