diff --git a/0001-riscv64-remove-Wcast-align.patch b/0001-riscv64-remove-Wcast-align.patch
new file mode 100644
index 0000000000000000000000000000000000000000..59107d7f4d9e071d9f561480c64328a5f5556178
--- /dev/null
+++ b/0001-riscv64-remove-Wcast-align.patch
@@ -0,0 +1,17 @@
+diff --git a/utils/uds/Makefile b/utils/uds/Makefile
+index f401a9b36178..2d44777b1cb5 100644
+--- a/utils/uds/Makefile
++++ b/utils/uds/Makefile
+@@ -38,7 +38,11 @@ ifeq ($(findstring clang, $(CC)),clang)
+ 		-Wno-implicit-const-int-float-conversion \
+ 		-Wno-language-extension-token
+ else
+-	WARNS =	-Wcast-align	\
++	ifeq ($(filter riscv64%,$(MAKE_HOST)),)
++	Wcast-align = -Wcast-align
++	endif
++
++	WARNS =	$(Wcast-align)	\
+ 		-Wcast-qual	\
+ 		-Wformat=2	\
+ 		-Wlogical-op
diff --git a/vdo.spec b/vdo.spec
index b0342a6152fcdbb93499e03f2921310919e22471..9f15c0e91112dde61d87a7efe5f870a8e5274dcb 100644
--- a/vdo.spec
+++ b/vdo.spec
@@ -2,11 +2,12 @@
 
 Name:           vdo
 Version:        8.3.1.1
-Release:        1
+Release:        2
 Summary:        Management tools for Virtual Data Optimizer
 License:        GPL-2.0-only
 URL:            http://github.com/dm-vdo/vdo
 Source0:	https://github.com/dm-vdo/vdo/archive/refs/tags/%{version}.tar.gz
+Patch0:		0001-riscv64-remove-Wcast-align.patch
 
 BuildRequires:  gcc libuuid-devel device-mapper-devel device-mapper-event-devel
 BuildRequires:  zlib-devel libblkid-devel
@@ -50,6 +51,9 @@ This package provides the user-space management tools for VDO.
 %{_mandir}/man8/*
 
 %changelog
+* Wed May 21 2025 laokz <zhangkai@iscas.ac.cn> - 8.3.1.1-2
+- riscv64: remove fragile -Wcast-align
+
 * Wed Mar 26 2025 wangkai <13474090681@163.com> - 8.3.1.1-1
 - Update to 8.3.1.1