diff --git a/math/octave-forge-biosig/Makefile b/math/octave-forge-biosig/Makefile
index 25dce241def1..cc6fd5f30199 100644
--- a/math/octave-forge-biosig/Makefile
+++ b/math/octave-forge-biosig/Makefile
@@ -1,31 +1,32 @@
 PORTNAME=	octave-forge-biosig
 DISTVERSION=	3.0.1
+PORTREVISION=	1
 CATEGORIES=	math
 MASTER_SITES=	https://pub.ist.ac.at/~schloegl/biosig/prereleases/
 DISTNAME=	biosig4octave-${DISTVERSION}.src
 
 MAINTAINER=	stephen@FreeBSD.org
 COMMENT=	Octave-forge package ${OCTAVE_PKGNAME}
 WWW=		http://octave.sourceforge.net/
 
 LICENSE=	GPLv3
 LICENSE_FILE=	${WRKDIR}/${OCTSRC}/COPYING
 
 LIB_DEPENDS+=	libbiosig.so:biology/biosig
 
 ALL_TARGET=	# nada
 
 # OCTSRC is the name of the directory of the package.
 # It is usually ${OCTAVE_PKGNAME} or ${DISTNAME}.
 
 OCTSRC=		${DISTNAME:R}
 
 WRKSRC=		${WRKDIR}/${OCTSRC}/src
 
 .include "${.CURDIR}/../../Mk/bsd.octave.mk"
 
 post-build:
 	${RM} ${WRKSRC}/Makefile ${WRKSRC}/configure
 	cd ${WRKDIR} && ${TAR} cfz ${OCTAVE_DISTNAME}.tar.gz ${OCTSRC}
 
 .include <bsd.port.mk>
diff --git a/math/octave-forge-biosig/files/patch-mexSSAVE.cpp b/math/octave-forge-biosig/files/patch-mexSSAVE.cpp
index b7e987b7bb31..2cc834af1bd2 100644
--- a/math/octave-forge-biosig/files/patch-mexSSAVE.cpp
+++ b/math/octave-forge-biosig/files/patch-mexSSAVE.cpp
@@ -1,11 +1,19 @@
---- mexSSAVE.cpp.orig	2022-10-28 21:23:00 UTC
+--- mexSSAVE.cpp.orig	2021-07-14 20:07:43 UTC
 +++ mexSSAVE.cpp
-@@ -202,7 +202,7 @@ void mexFunction(
+@@ -87,6 +87,7 @@ void mexFunction(
+ 	HDRTYPE		*hdr;
+ 	size_t 		count;
+ 	time_t 		T0;
++	time_t		zero = 0;
+ 	char 		*FileName;  
+ 	char 		tmpstr[128];  
+ 	int 		status; 
+@@ -202,7 +203,7 @@ void mexFunction(
  	if ( (p = mxGetField(prhs[0], 0, "tzmin") ) != NULL )
  		hdr->tzmin 	= (int16_t)getDouble(p, 0);
  	else
 -		hdr->tzmin	= -timezone/60;
-+		hdr->tzmin	= -localtime(0)->tm_gmtoff/60;
++		hdr->tzmin	= -localtime(&zero)->tm_gmtoff/60;
  	if ( (p = mxGetField(prhs[0], 0, "FileName") ) != NULL ) 	FileName 	= mxArrayToString(p);
  	if ( (p = mxGetField(prhs[0], 0, "SampleRate") ) != NULL ) 	hdr->SampleRate = getDouble(p, 0);
  	if ( (p = mxGetField(prhs[0], 0, "NS") ) != NULL )	 	hdr->NS         = getDouble(p, 0);