diff --git a/mpp/base/mpp_buffer_impl.cpp b/mpp/base/mpp_buffer_impl.cpp
index 9e63c0d6..14634b46 100644
--- a/mpp/base/mpp_buffer_impl.cpp
+++ b/mpp/base/mpp_buffer_impl.cpp
@@ -671,7 +671,9 @@ void MppBufferService::destroy_group(MppBufferGroupImpl *group)
             struct list_head *tmp = logs->next;
             list_del_init(tmp);
             mpp_free(list_entry(tmp, MppBufLog, list));
+            group->log_count--;
         }
+        mpp_assert(group->log_count == 0;
     }
 
     mpp_allocator_put(&group->allocator);