diff --git a/graphics/libpano13/Makefile b/graphics/libpano13/Makefile
index e994421d3cf7..b26b160132fe 100644
--- a/graphics/libpano13/Makefile
+++ b/graphics/libpano13/Makefile
@@ -1,36 +1,36 @@
 PORTNAME=	libpano13
 DISTVERSION=	2.9.22
-PORTREVISION=	11
+PORTREVISION=	12
 CATEGORIES=	graphics java
 MASTER_SITES=	SF/panotools/${PORTNAME}/${PORTNAME}-${DISTVERSION}
 
 MAINTAINER=	fuz@FreeBSD.org
 COMMENT=	Cross-platform library behind Panorama Tools and other photo stitchers
 WWW=		https://panotools.sourceforge.net/
 
 LICENSE=	GPLv2+
 LICENSE_FILE=	${WRKSRC}/COPYING
 
 LIB_DEPENDS=	libpng.so:graphics/png \
 		libtiff.so:graphics/tiff
 
 USES=		cmake:testing cpe jpeg pathfix perl5 pkgconfig
 CPE_VENDOR=	${PORTNAME}_project
 USE_LDCONFIG=	yes
 USE_PERL5=	build	# for pod2man
 
 WRKSRC=		${WRKDIR}/libpano13-${DISTVERSION}
 
 OPTIONS_DEFINE=	DOCS JAVA SUITESPARSE
 OPTIONS_DEFAULT=	SUITESPARSE
 SUITESPARSE_DESC=	Use math/suitesparse for faster operation
 OPTIONS_SUB=	yes
 JAVA_USES=	java
 JAVA_CMAKE_BOOL=	SUPPORT_JAVA_PROGRAMS
 JAVA_VARS=	JAVA_OS=native
 SUITESPARSE_LIB_DEPENDS= \
 		libcholmod.so:math/suitesparse-cholmod \
 		libspqr.so:math/suitesparse-spqr
 SUITESPARSE_CMAKE_BOOL=	USE_SPARSE_LEVMAR
 
 .include <bsd.port.mk>
diff --git a/graphics/libpano13/files/patch-filter.h b/graphics/libpano13/files/patch-filter.h
new file mode 100644
index 000000000000..c06e64103687
--- /dev/null
+++ b/graphics/libpano13/files/patch-filter.h
@@ -0,0 +1,24 @@
+--- filter.h.orig	2025-10-04 23:10:13 UTC
++++ filter.h
+@@ -511,8 +511,8 @@ typedef		void (*intFunc)( unsigned char *dst, 	unsigne
+ // Interpolating functions for resampler
+ 
+ typedef		void (*intFunc)( unsigned char *dst, 	unsigned char **rgb,
+-							register double Dx, 
+-							register double Dy,
++							double Dx, 
++							double Dy,
+ 							int color, int SamplesPerPixel);
+ 
+ // Filter function type for anti aliasing Filter
+@@ -747,8 +747,8 @@ PANO13_IMPEX int	getVRPanoOptions	( VRPanoOptions *v, 
+ PANO13_IMPEX int 	readAdjust		( aPrefs *p,  fullPath* sfile, int insert, sPrefs *sP );
+ PANO13_IMPEX void 	readControlPoints	(char* script, controlPoint *c );
+ PANO13_IMPEX int	getVRPanoOptions	( VRPanoOptions *v, char *line );
+-PANO13_IMPEX void 	nextWord			( register char* word, char** ch );
+-PANO13_IMPEX void 	nextLine			( register char* line, char** ch );
++PANO13_IMPEX void 	nextWord			( char* word, char** ch );
++PANO13_IMPEX void 	nextLine			( char* line, char** ch );
+ PANO13_IMPEX int 	numLines			( char* script, char first );
+ 
+ PANO13_IMPEX char *panoParserFindOLine(char *script, int index);