diff --git a/filesystems/mergerfs/Makefile b/filesystems/mergerfs/Makefile
index 288a63552490..b774e71a4d12 100644
--- a/filesystems/mergerfs/Makefile
+++ b/filesystems/mergerfs/Makefile
@@ -1,27 +1,25 @@
 PORTNAME=	mergerfs
 DISTVERSION=	2.40.2
 CATEGORIES=	filesystems
 PKGNAMEPREFIX=	fusefs-
 
 MAINTAINER=	ehaupt@FreeBSD.org
 COMMENT=	Featureful FUSE based union filesystem
 WWW=		https://github.com/trapexit/mergerfs
 
 LICENSE=	ISCL
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
-NOT_FOR_ARCHS=	i386
-
 USES=		fuse gmake localbase:ldflags
 USE_GITHUB=	yes
 GH_ACCOUNT=	trapexit
 
 PLIST_FILES=	bin/mergerfs \
 		lib/mergerfs/preload.so \
 		share/man/man1/mergerfs.1.gz
 
 post-install:
 	${STRIP_CMD} ${STAGEDIR}${PREFIX}/bin/mergerfs \
 		${STAGEDIR}${PREFIX}/lib/mergerfs/preload.so
 
 .include <bsd.port.mk>
diff --git a/filesystems/mergerfs/files/patch-src_fs__copy__file__range__unsupported.icpp b/filesystems/mergerfs/files/patch-src_fs__copy__file__range__unsupported.icpp
new file mode 100644
index 000000000000..05a307ab97bf
--- /dev/null
+++ b/filesystems/mergerfs/files/patch-src_fs__copy__file__range__unsupported.icpp
@@ -0,0 +1,11 @@
+--- src/fs_copy_file_range_unsupported.icpp.orig	2025-08-16 08:24:30 UTC
++++ src/fs_copy_file_range_unsupported.icpp
+@@ -31,7 +31,7 @@ namespace fs
+                   int64_t            *off_in_,
+                   const int           fd_out_,
+                   int64_t            *off_out_,
+-                  const size_t        len_,
++                  const uint64_t      len_,
+                   const unsigned int  flags_)
+   {
+     return (errno=EOPNOTSUPP,-1);