diff --git a/easybuild/easyconfigs/x/x264/x264-20231019-GCCcore-13.2.0.eb b/easybuild/easyconfigs/x/x264/x264-20231019-GCCcore-13.2.0.eb
index a1d60486ce0..3a5bb6947d8 100644
--- a/easybuild/easyconfigs/x/x264/x264-20231019-GCCcore-13.2.0.eb
+++ b/easybuild/easyconfigs/x/x264/x264-20231019-GCCcore-13.2.0.eb
@@ -14,7 +14,11 @@ toolchain = {'name': 'GCCcore', 'version': '13.2.0'}
 
 source_urls = ['https://code.videolan.org/videolan/%(name)s/-/archive/baee400f/']
 sources = [{'download_filename': '%(name)s-9c3c7168.tar.gz', 'filename': SOURCE_TAR_GZ}]
-checksums = ['bf6a61dcc7e1f4e623a44f09de02e843f06e7ec14f807557b43130fc84287f29']
+patches = ['x264-20231019_add-riscv-support.patch']
+checksums = [
+    {'x264-20231019.tar.gz': 'bf6a61dcc7e1f4e623a44f09de02e843f06e7ec14f807557b43130fc84287f29'},
+    {'x264-20231019_add-riscv-support.patch': 'd4455f3f643f255d4e907cf8a7bd803a3184ab2b6cc3445298bd2986fbb976f6'},
+]
 
 builddependencies = [
     ('binutils', '2.40'),
diff --git a/easybuild/easyconfigs/x/x264/x264-20231019_add-riscv-support.patch b/easybuild/easyconfigs/x/x264/x264-20231019_add-riscv-support.patch
new file mode 100644
index 00000000000..b522010af86
--- /dev/null
+++ b/easybuild/easyconfigs/x/x264/x264-20231019_add-riscv-support.patch
@@ -0,0 +1,29 @@
+Add Risc-V 64 bit to config.guess
+https://code.videolan.org/videolan/x264/-/merge_requests/121
+
+From 941cae6d1d6d6344c9a1d27440eaf2872b18ca9a Mon Sep 17 00:00:00 2001
+From: Roger Hardiman <software@rjh.org.uk>
+Date: Fri, 18 Nov 2022 20:15:40 +0000
+Subject: [PATCH] Add Risc-V 64 bit
+
+---
+ config.guess | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/config.guess b/config.guess
+index d437be00..14c12963 100755
+--- a/config.guess
++++ b/config.guess
+@@ -985,6 +985,9 @@ EOF
+     ppc:Linux:*:*)
+ 	echo powerpc-unknown-linux-gnu
+ 	exit ;;
++    riscv64:Linux:*:*)
++	echo ${UNAME_MACHINE}-unknown-linux-gnu
++	exit ;;
+     s390:Linux:*:* | s390x:Linux:*:*)
+ 	echo ${UNAME_MACHINE}-ibm-linux
+ 	exit ;;
+-- 
+GitLab
+