diff --git a/src/event/quic/ngx_event_quic.h b/src/event/quic/ngx_event_quic.h
index 109cd54ef..903b690b9 100644
--- a/src/event/quic/ngx_event_quic.h
+++ b/src/event/quic/ngx_event_quic.h
@@ -53,7 +53,7 @@ typedef struct {
     uint64_t                       offset;
     uint64_t                       last_offset;
     ngx_chain_t                   *chain;
-    ngx_chain_t                  **last_chain;
+    ngx_chain_t                   *last_chain;
 } ngx_quic_buffer_t;
 
 
diff --git a/src/event/quic/ngx_event_quic_frames.c b/src/event/quic/ngx_event_quic_frames.c
index 5ffae32c3..9a1a6afe5 100644
--- a/src/event/quic/ngx_event_quic_frames.c
+++ b/src/event/quic/ngx_event_quic_frames.c
@@ -503,7 +503,7 @@ ngx_quic_write_buffer(ngx_connection_t *c, ngx_quic_buffer_t *qb,
 
     if (qb->last_chain && offset >= qb->last_offset) {
         base = qb->last_offset;
-        chain = qb->last_chain;
+        chain = &qb->last_chain;
 
     } else {
         base = qb->offset;
@@ -600,7 +600,7 @@ ngx_quic_write_buffer(ngx_connection_t *c, ngx_quic_buffer_t *qb,
     }
 
     qb->last_offset = base;
-    qb->last_chain = chain;
+    qb->last_chain = *chain;
 
     return in;
 }