diff --git a/src/lib/bitset/bitset.h b/src/lib/bitset/bitset.h
index e2ae4f5f6b47ba600a960ffaf7d255021ee048f1..775de5c07f8a69c60a801f03b89ec59d800a56fd 100644
--- a/src/lib/bitset/bitset.h
+++ b/src/lib/bitset/bitset.h
@@ -69,7 +69,7 @@ struct tt_bitset_page {
 	size_t first_pos;
 	rb_node(struct tt_bitset_page) node;
 	size_t cardinality;
-	uint8_t data[0];
+	uint8_t data[];
 };
 
 typedef rb_tree(struct tt_bitset_page) tt_bitset_pages_t;