diff --git a/object-test/trees.c b/object-test/trees.c
index 4f78095..e3fd35c 100644
--- a/object-test/trees.c
+++ b/object-test/trees.c
@@ -66,8 +66,8 @@ int main(void)
 		printf("%u\n", item->value);
 	}
 
-	b_btree btree = {};
-	struct btree_item items3[NITEMS] = {};
+	b_btree btree = {0};
+	struct btree_item items3[NITEMS] = {0};
 	for (int i = 0; i < NITEMS; i++) {
 		items3[i].value = i;
 		put_node(&btree, &items3[i]);
diff --git a/object/include/blue/object/hashmap.h b/object/include/blue/object/hashmap.h
index 0e012b5..651af59 100644
--- a/object/include/blue/object/hashmap.h
+++ b/object/include/blue/object/hashmap.h
@@ -26,7 +26,7 @@
 
 #define B_HASHMAP_ITEM_END                                                     \
 	{                                                                      \
-		.key = {}, .value = {}                                         \
+		.key = {0}, .value = {0}                                         \
 	}
 
 #define b_hashmap_foreach(it, hashmap)                                         \
diff --git a/object/include/blue/object/tree.h b/object/include/blue/object/tree.h
index c9371aa..0d4a3dc 100644
--- a/object/include/blue/object/tree.h
+++ b/object/include/blue/object/tree.h
@@ -6,7 +6,7 @@
 #include <blue/object/string.h>
 
 #define B_TREE(p)        ((b_tree *)(p))
-#define B_TREE_NODE_INIT ((b_tree_node) {})
+#define B_TREE_NODE_INIT ((b_tree_node){0})
 
 #define B_TREE_CONTAINER(t, m, v)                                              \
 	((void *)((v) ? (uintptr_t)(v) - (offsetof(t, m)) : 0))