diff --git a/math/alt-ergo/Makefile b/math/alt-ergo/Makefile
index 7fc95e14929f..572358f84481 100644
--- a/math/alt-ergo/Makefile
+++ b/math/alt-ergo/Makefile
@@ -1,41 +1,42 @@
 PORTNAME=	alt-ergo
 PORTVERSION=	0.95.2
-PORTREVISION=	4
+PORTREVISION=	5
 CATEGORIES=	math
 MASTER_SITES=	http://alt-ergo.ocamlpro.com/http/alt-ergo-${PORTVERSION}/
 
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	Automatic solver of mathematical formulas for program verification
 WWW=		https://alt-ergo.lri.fr
 
 LICENSE=	CeCILL-C
 LICENSE_NAME=	Ce[a] C[nrs] I[nria] L[ogiciel] L[ibre] C license, version 1
 LICENSE_FILE=	${WRKSRC}/LICENSE
 LICENSE_PERMS=	dist-mirror dist-sell pkg-mirror pkg-sell auto-accept
 
 BROKEN_powerpc64=	fails to compile: Assembler messages: /tmp/camlasm2822e8.s:10348: Error: operand out of range
 
 BUILD_DEPENDS=	ocaml-zarith>1.2:math/ocaml-zarith \
 		ocaml-num>=0:math/ocaml-num \
 		ocaml-ocamlgraph>1.8:math/ocaml-ocamlgraph \
 		ocaml-lablgtk2>=0:x11-toolkits/ocaml-lablgtk2
 RUN_DEPENDS=	ocaml-ocamlgraph>1.8:math/ocaml-ocamlgraph \
 		ocaml-lablgtk2>=0:x11-toolkits/ocaml-lablgtk2
 
 GNU_CONFIGURE=	yes
+GNU_CONFIGURE_MANPREFIX=${PREFIX}/share
 USES=		gmake
 USE_OCAML=	yes
 ALL_TARGET=	opt pack xpack META
 INSTALL_TARGET=	install install-pack-opt install-pack-byte
 
 post-patch:
 	@${REINPLACE_CMD} -e '\|^# installation|,\|^# documentation|{ \
 		\|cp -f.*$$(BINDIR)|s|cp -f|${INSTALL_SCRIPT}|; \
 		\|cp -f.*$$(MANDIR)|s|cp -f|${INSTALL_MAN}|; \
 		\|cp -f.*$$(LIBDIR)|s|cp -f|${INSTALL_DATA}|; }' \
 		-e 's|make -C|${MAKE_CMD} -C|' \
 			${WRKSRC}/Makefile.in
 	@${REINPLACE_CMD} -Ee 's@(\+|/)(lablgtk2)@\1site-lib/\2@' \
 		${WRKSRC}/configure
 
 .include <bsd.port.mk>
diff --git a/math/alt-ergo/pkg-plist b/math/alt-ergo/pkg-plist
index bf0cd1a27feb..72e2cd72fc17 100644
--- a/math/alt-ergo/pkg-plist
+++ b/math/alt-ergo/pkg-plist
@@ -1,7 +1,7 @@
 bin/alt-ergo
 lib/ocaml/alt-ergo/META
 lib/ocaml/alt-ergo/altErgo.cmi
 lib/ocaml/alt-ergo/altErgo.cmo
 lib/ocaml/alt-ergo/altErgo.cmx
 lib/ocaml/alt-ergo/altErgo.o
-man/man1/alt-ergo.1.gz
+share/man/man1/alt-ergo.1.gz