diff --git a/core/include/blue/core/stream.h b/core/include/blue/core/stream.h
index 9393a54..d55040c 100644
--- a/core/include/blue/core/stream.h
+++ b/core/include/blue/core/stream.h
@@ -41,7 +41,7 @@ typedef struct b_stream {
 	int *s_istack;
 	int s_add_indent;
 	size_t s_istack_ptr, s_istack_size;
-	void *s_ptr;
+	void *s_ptr0, *s_ptr1;
 
 	b_status (*s_close)(struct b_stream *);
 	b_status (*s_seek)(struct b_stream *, long long, b_stream_seek_origin);