diff --git a/lwip.spec b/lwip.spec
index f6bc918..b5e8e7a 100644
--- a/lwip.spec
+++ b/lwip.spec
@@ -115,9 +115,6 @@ cd %{_builddir}/%{name}-%{version}/src
 %{_libdir}/liblwip.a
 
 %changelog
-* Sat Dec 3 2022 wuchangsheng<wuchangsheng2@huawei.com> - 2.1.2-15
-- optimize app thread write buff block
-
 * Wed Oct 19 2022 zhujunhao<zhujunhao11@huawei.com> - 2.1.2-14
 - add writev and readv