diff --git a/math/octave-forge-octproj/Makefile b/math/octave-forge-octproj/Makefile
index aec52b5f5d78..29bd722d88d0 100644
--- a/math/octave-forge-octproj/Makefile
+++ b/math/octave-forge-octproj/Makefile
@@ -1,35 +1,35 @@
 # Created by: Stephen Montgomery-Smith <stephen@math.missouri.edu>
 
 PORTNAME=	octave-forge-octproj
 PORTVERSION=	2.0.1
-PORTREVISION=	4
+PORTREVISION=	5
 CATEGORIES=	math
 
 MAINTAINER=	stephen@FreeBSD.org
 COMMENT=	Octave-forge package ${OCTAVE_PKGNAME}
 
 LICENSE=	GPLv3
 LICENSE_FILE=	${WRKDIR}/${OCTSRC}/COPYING
 
 LIB_DEPENDS+=	libproj.so:graphics/proj
 
 # OCTSRC is the name of the directory of the package.
 # It is usually ${OCTAVE_PKGNAME} or ${DISTNAME}.
 OCTSRC=		${DISTNAME}
 
 WRKSRC=		${WRKDIR}/${OCTSRC}/src
 
 USES+=		compiler:gcc-c++11-lib
 
 CPPFLAGS+=	-DACCEPT_USE_OF_DEPRECATED_PROJ_API_H=1
 
 .include "${.CURDIR}/../../Mk/bsd.octave.mk"
 
 post-patch:
 	${REINPLACE_CMD} -e s/CC/MKOCTFILE/ -e s/-Wall// -e s/-Wextra// ${WRKSRC}/Makefile
 
 post-build:
 	${RM} ${WRKSRC}/Makefile ${WRKSRC}/configure
 	cd ${WRKDIR} && ${TAR} cfz ${DISTNAME}.tar.gz ${OCTSRC}
 
 .include <bsd.port.mk>
diff --git a/math/octave-forge-octproj/files/patch-projwrap.h b/math/octave-forge-octproj/files/patch-projwrap.h
new file mode 100644
index 000000000000..c56dc1f24c25
--- /dev/null
+++ b/math/octave-forge-octproj/files/patch-projwrap.h
@@ -0,0 +1,10 @@
+--- projwrap.h.orig	2020-05-07 16:41:54 UTC
++++ projwrap.h
+@@ -24,6 +24,7 @@ or http://www.gnu.org
+ #include<stdio.h>
+ #include<stdlib.h>
+ #include<math.h>
++#undef ACCEPT_USE_OF_DEPRECATED_PROJ_API_H
+ #include<proj.h>
+ /******************************************************************************/
+ /******************************************************************************/