diff --git a/src/rc_client.c b/src/rc_client.c
index d9a65c7d..28944ee1 100644
--- a/src/rc_client.c
+++ b/src/rc_client.c
@@ -4038,8 +4038,12 @@ static void rc_client_ping(rc_client_scheduled_callback_data_t* callback_data, r
 
   if (!client->callbacks.rich_presence_override ||
       !client->callbacks.rich_presence_override(client, buffer, sizeof(buffer))) {
+    rc_mutex_lock(&client->state.mutex);
+
     rc_runtime_get_richpresence(&client->game->runtime, buffer, sizeof(buffer),
         client->state.legacy_peek, client, NULL);
+
+    rc_mutex_unlock(&client->state.mutex);
   }
 
   memset(&api_params, 0, sizeof(api_params));
@@ -4078,9 +4082,13 @@ size_t rc_client_get_rich_presence_message(rc_client_t* client, char buffer[], s
   if (!client || !client->game || !buffer)
     return 0;
 
+  rc_mutex_lock(&client->state.mutex);
+
   result = rc_runtime_get_richpresence(&client->game->runtime, buffer, (unsigned)buffer_size,
       client->state.legacy_peek, client, NULL);
 
+  rc_mutex_unlock(&client->state.mutex);
+
   if (result == 0)
     result = snprintf(buffer, buffer_size, "Playing %s", client->game->public_.title);