diff --git a/src/chat/chat_member.c b/src/chat/chat_member.c
index 805f62de..e740096c 100644
--- a/src/chat/chat_member.c
+++ b/src/chat/chat_member.c
@@ -300,12 +300,13 @@ int chat_core_get_single_member(struct UTUN_INSTANCE* inst, const char* ch_id, u
 void chat_core_request_member_list_trampoline(void* arg) {
     struct chat_member_list_req* req = (struct chat_member_list_req*)arg;
     if (!req || !CC(req->inst) || !CC(req->inst)->initialized) { u_free(arg); return; }
+    struct UTUN_INSTANCE* inst = req->inst;
     char ch_id[64]; strncpy(ch_id, req->ch_id, sizeof(ch_id) - 1); ch_id[sizeof(ch_id) - 1] = '\0';
     u_free(arg);
 
     uint8_t* members = NULL;
     int count = 0;
-    if (chat_core_get_member_list(req->inst, ch_id, &members, &count) != 0 || !members) return;
+    if (chat_core_get_member_list(inst, ch_id, &members, &count) != 0 || !members) return;
 
     size_t ch_len = strlen(ch_id);
     size_t evt_sz = 1 + ch_len + 2 + (size_t)count * CHAT_MEMBER_DISPLAY_SIZE;
@@ -317,7 +318,7 @@ void chat_core_request_member_list_trampoline(void* arg) {
     memcpy(evt + 1, ch_id, ch_len);
     memcpy(evt + 1 + ch_len, &u16cnt, 2);
     memcpy(evt + 1 + ch_len + 2, members, (size_t)count * CHAT_MEMBER_DISPLAY_SIZE);
-    chat_event_post(req->inst, CHAT_EVT_MEMBER_LIST, evt, (int)evt_sz);
+    chat_event_post(inst, CHAT_EVT_MEMBER_LIST, evt, (int)evt_sz);
 
     u_free(evt);
     u_free(members);
@@ -326,12 +327,13 @@ void chat_core_request_member_list_trampoline(void* arg) {
 void chat_core_request_member_rtt_trampoline(void* arg) {
     struct chat_member_list_req* req = (struct chat_member_list_req*)arg;
     if (!req || !CC(req->inst) || !CC(req->inst)->initialized) { u_free(arg); return; }
+    struct UTUN_INSTANCE* inst = req->inst;
     char ch_id[64]; strncpy(ch_id, req->ch_id, sizeof(ch_id) - 1); ch_id[sizeof(ch_id) - 1] = '\0';
     u_free(arg);
 
     uint8_t* members = NULL;
     int count = 0;
-    if (chat_core_get_member_list(req->inst, ch_id, &members, &count) != 0 || !members) return;
+    if (chat_core_get_member_list(inst, ch_id, &members, &count) != 0 || !members) return;
 
     size_t ch_len = strlen(ch_id);
     size_t evt_sz = 1 + ch_len + 1 + CHAT_MEMBER_DISPLAY_SIZE;
@@ -348,7 +350,7 @@ void chat_core_request_member_rtt_trampoline(void* arg) {
         memcpy(evt + 1, ch_id, ch_len);
         evt[1 + ch_len] = 1;
         memcpy(evt + 1 + ch_len + 1, members + i * CHAT_MEMBER_DISPLAY_SIZE, CHAT_MEMBER_DISPLAY_SIZE);
-        chat_event_post(req->inst, CHAT_EVT_MEMBER_UPDATED, evt, (int)evt_sz);
+        chat_event_post(inst, CHAT_EVT_MEMBER_UPDATED, evt, (int)evt_sz);
     }
 
     u_free(evt);