diff --git a/sysutils/mdf2iso/Portfile b/sysutils/mdf2iso/Portfile
index c736948c54a..203e7aa7c81 100644
--- a/sysutils/mdf2iso/Portfile
+++ b/sysutils/mdf2iso/Portfile
@@ -1,14 +1,25 @@
-PortSystem 	   1.0
-name 		   mdf2iso
-version		   0.3.0
-homepage	   http://mdf2iso.berlios.de/
-description	   Tool to convert mdf (Alcohol 120% images) images to iso images.
-long_description    ${description}
-categories	   sysutils
-platforms      darwin
-use_bzip2      yes
-maintainers    nomaintainer
-master_sites   http://download.berlios.de/mdf2iso http://download2.berlios.de/mdf2iso
-checksums      md5 a190625318476a196930ac66acd8fd07
-distname       ${name}-${version}-src
-worksrcdir     ${name}
+# -*- coding: utf-8; mode: tcl; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- vim:fenc=utf-8:ft=tcl:et:sw=4:ts=4:sts=4
+
+PortSystem              1.0
+
+name                    mdf2iso
+version                 0.3.1
+revision                0
+categories              sysutils
+license                 GPL-2+
+maintainers             nomaintainer
+
+description             Convert MDF (Alcohol 120% images) to ISO images
+long_description        ${description}.
+
+homepage                https://packages.debian.org/sid/mdf2iso
+master_sites            debian:m/${name}
+distname                ${name}_${version}.orig
+worksrcdir              ${name}-${version}
+
+checksums               rmd160  d07bf6d072486382c71dc06ab04d529f769db180 \
+                        sha256  906f0583cb3d36c4d862da23837eebaaaa74033c6b0b6961f2475b946a71feb7 \
+                        size    193860
+
+patch.pre_args-replace  -p0 -p1
+patchfiles              implicit.patch
diff --git a/sysutils/mdf2iso/files/implicit.patch b/sysutils/mdf2iso/files/implicit.patch
new file mode 100644
index 00000000000..b28e071b3b1
--- /dev/null
+++ b/sysutils/mdf2iso/files/implicit.patch
@@ -0,0 +1,18 @@
+Fix implicit declarations
+
+error: call to undeclared library function 'exit' with type
+'void (int) __attribute__((noreturn))' [-Wimplicit-function-declaration]
+
+See: https://trac.macports.org/wiki/WimplicitFunctionDeclaration
+
+diff -urN a/configure b/configure
+--- a/configure	2015-02-23 05:47:52.000000000 -0500
++++ b/configure	2025-08-26 21:31:22.000000000 -0400
+@@ -3218,6 +3218,7 @@
+ cat confdefs.h >>conftest.$ac_ext
+ cat >>conftest.$ac_ext <<_ACEOF
+ /* end confdefs.h.  */
++#include <stdlib.h>
+ #include <ctype.h>
+ #if ((' ' & 0x0FF) == 0x020)
+ # define ISLOWER(c) ('a' <= (c) && (c) <= 'z')