diff --git a/science/minc2/Makefile b/science/minc2/Makefile
index 4d3ae192e619..60f4ed80542d 100644
--- a/science/minc2/Makefile
+++ b/science/minc2/Makefile
@@ -1,46 +1,43 @@
 PORTNAME=	minc
 PORTVERSION=	2.2.00
 DISTVERSIONPREFIX=	release-
-PORTREVISION=	12
+PORTREVISION=	13
 PORTEPOCH=	1
 CATEGORIES=	science biology
 PKGNAMESUFFIX=	2
 
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	Medical Imaging NetCDF
 WWW=		https://www.bic.mni.mcgill.ca/ServicesSoftware/MINC
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/COPYING
 
-BROKEN_FreeBSD_13=	ld: error: duplicate symbol: matrix_errno
-BROKEN_FreeBSD_14=	ld: error: duplicate symbol: matrix_errno
-
 LIB_DEPENDS=	libhdf5.so:science/hdf5 \
 		libnetcdf.so:science/netcdf
 RUN_DEPENDS=	bash:shells/bash
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	BIC-MNI
 
 MAKE_JOBS_UNSAFE=	yes
 
 USES=		autoreconf bison gmake libtool perl5 shebangfix
 SHEBANG_FILES=	progs/mincview/mincview
 GNU_CONFIGURE=	yes
 CONFIGURE_ARGS=	--enable-shared=yes --enable-static=yes
 INSTALL_TARGET=	install-strip
 USE_LDCONFIG=	yes
 
 CFLAGS+=	-Wno-error=return-type
 CPPFLAGS+=	-I${LOCALBASE}/include
 LDFLAGS+=	-L${LOCALBASE}/lib
 
 CONFLICTS=	minc-1* zh-tk
 
 pre-patch:
 	@${RM} ${WRKSRC}/ac_config_aux/*
 	@${RM} ${WRKSRC}/progs/minccalc/gram.[ch]
 	@${RM} ${WRKSRC}/progs/mincgen/ncgentab.[ch]
 
 .include <bsd.port.mk>
diff --git a/science/minc2/files/patch-conversion_minctoecat_ecat__write.c b/science/minc2/files/patch-conversion_minctoecat_ecat__write.c
new file mode 100644
index 000000000000..4369323f90d8
--- /dev/null
+++ b/science/minc2/files/patch-conversion_minctoecat_ecat__write.c
@@ -0,0 +1,12 @@
+--- conversion/minctoecat/ecat_write.c.orig	2023-04-11 00:36:34 UTC
++++ conversion/minctoecat/ecat_write.c
+@@ -11,6 +11,9 @@
+ #define ERROR   -1
+ #define V7 70
+ 
++MatrixErrorCode matrix_errno;
++
++char matrix_errtxt[132];
+ 
+ char* dstypecode[NumDataSetTypes] =
+ 	{ "u","s","i","a","n","pm","v8","v","p8","p","i8","S","S8","N", "FS"};
diff --git a/science/minc2/files/patch-conversion_minctoecat_ecat__write.h b/science/minc2/files/patch-conversion_minctoecat_ecat__write.h
new file mode 100644
index 000000000000..902eafc23a84
--- /dev/null
+++ b/science/minc2/files/patch-conversion_minctoecat_ecat__write.h
@@ -0,0 +1,14 @@
+--- conversion/minctoecat/ecat_write.h.orig	2023-04-11 00:36:27 UTC
++++ conversion/minctoecat/ecat_write.h
+@@ -39,9 +39,9 @@ typedef enum {
+   BitData
+ } MatrixDataType;
+ 
+-MatrixErrorCode matrix_errno;
++extern MatrixErrorCode matrix_errno;
+ 
+-char matrix_errtxt[132];
++extern char matrix_errtxt[132];
+ 
+ typedef struct XMAIN_HEAD {
+   char magic_number[14];