diff --git a/math/gkmap/Makefile b/math/gkmap/Makefile
index f60d57f636ad..3b598de8316e 100644
--- a/math/gkmap/Makefile
+++ b/math/gkmap/Makefile
@@ -1,25 +1,23 @@
 # Created by: Javad Kouhi <javad.kouhi@gmail.com>
 
 PORTNAME=	gkmap
 PORTVERSION=	0.2
-PORTREVISION=	3
+PORTREVISION=	4
 CATEGORIES=	math
 MASTER_SITES=	SF/gkmap/gkmap/gkmap-${PORTVERSION}/
 
 MAINTAINER=	javad.kouhi@gmail.com
 COMMENT=	Simplification of Boolean Functions using Karnaugh Map
 
 LICENSE=	GPLv2
 
-BROKEN_FreeBSD_13=	ld: error: duplicate symbol: cell_array
-BROKEN_FreeBSD_14=	ld: error: duplicate symbol: cell_array
-
 LIB_DEPENDS=	libfontconfig.so:x11-fonts/fontconfig \
-		libfreetype.so:print/freetype2
+		libfreetype.so:print/freetype2 \
+		libharfbuzz.so:print/harfbuzz
 
 USES=		gnome pkgconfig dos2unix
 USE_GNOME=	cairo gdkpixbuf2 gtk20 libglade2 libxml2
 
 GNU_CONFIGURE=	yes
 
 .include <bsd.port.mk>
diff --git a/math/gkmap/files/patch-src_init.c b/math/gkmap/files/patch-src_init.c
new file mode 100644
index 000000000000..03466c7bc4de
--- /dev/null
+++ b/math/gkmap/files/patch-src_init.c
@@ -0,0 +1,14 @@
+--- src/init.c.orig	2021-11-02 09:37:31 UTC
++++ src/init.c
+@@ -1,5 +1,11 @@
+ #include "kmap_struct.h" 
+ 	
++/* globals */
++struct cell cell_array[4][4];
++struct output out_array[20];
++char semi_final_out[70];
++char final_out[100];
++
+ void init_kmap(void) 
+ {
+ 	int i,j;
diff --git a/math/gkmap/files/patch-src_kmap__struct.h b/math/gkmap/files/patch-src_kmap__struct.h
new file mode 100644
index 000000000000..b2b22d1c410f
--- /dev/null
+++ b/math/gkmap/files/patch-src_kmap__struct.h
@@ -0,0 +1,26 @@
+--- src/kmap_struct.h.orig	2021-11-02 09:33:21 UTC
++++ src/kmap_struct.h
+@@ -36,7 +36,7 @@ struct cell
+ 	struct cell *left,*right,*down,*up;
+ 	char col_string[3], row_string[3];
+ };
+-struct cell cell_array[4][4];
++extern struct cell cell_array[4][4];
+ 	
+ struct output
+ {
+@@ -44,10 +44,10 @@ struct output
+ 	char cell_num_string[10];
+ 	int status;
+ };
+-struct output out_array[20];
+-	
+-char semi_final_out[70];
+-char final_out[100];
++extern struct output out_array[20];
++
++extern char semi_final_out[70];
++extern char final_out[100];
+ 
+ 
+