diff --git a/libisofs/riscv64.patch b/libisofs/riscv64.patch
new file mode 100644
index 000000000..908ec175e
--- /dev/null
+++ b/libisofs/riscv64.patch
@@ -0,0 +1,17 @@
+diff --git PKGBUILD PKGBUILD
+index 3bdc4bd..fdc14e1 100644
+--- PKGBUILD
++++ PKGBUILD
+@@ -15,6 +15,12 @@ sha256sums=('0152d66a9d340b659fe9c880eb9190f3570fb477ac07cf52e8bcd134a1d30d70'
+             'SKIP')
+ validpgpkeys=('44BC9FD0D688EB007C4DD029E9CBDFC0ABC0A854') # Thomas Schmitt <scdbackup@gmx.net>
+ 
++prepare() {
++  cd $pkgname-$pkgver
++  autoupdate
++  autoreconf -fiv
++}
++
+ build() {
+   cd "${pkgname}"-${pkgver}
+   ./configure --prefix=/usr \