diff --git a/emulators/tiemu3/Makefile b/emulators/tiemu3/Makefile
index 9b593209bfbe..cdb57a746adc 100644
--- a/emulators/tiemu3/Makefile
+++ b/emulators/tiemu3/Makefile
@@ -16,7 +16,7 @@ LIB_DEPENDS=	libticalcs2.so:comms/libticalcs2 \
 		libticables2.so:comms/libticables2 \
 		libtifiles2.so:devel/libtifiles2
 
-USES=		gmake libtool pkgconfig
+USES=		gmake groff libtool pkgconfig
 GNU_CONFIGURE=	yes
 USE_GNOME=	gtk20 libglade2
 USE_SDL=	sdl
diff --git a/lang/clang33/Makefile b/lang/clang33/Makefile
index ef020627d9ca..e50f0eb62ee2 100644
--- a/lang/clang33/Makefile
+++ b/lang/clang33/Makefile
@@ -33,7 +33,7 @@ PYTHONLIBDIR=	${LLVM_PREFIX}/lib/python
 
 GNU_CONFIGURE=	yes
 GNU_CONFIGURE_PREFIX=	${LLVM_PREFIX}
-USES=		gmake perl5 python
+USES=		gmake groff perl5 python
 USE_LDCONFIG=	yes
 
 MAKE_ARGS=	CLANG_TBLGEN=${WRKSRC}/${RELTYPE}/bin/clang-tblgen \
diff --git a/lang/clang34/Makefile b/lang/clang34/Makefile
index 311f996b8b52..689de2fdb11f 100644
--- a/lang/clang34/Makefile
+++ b/lang/clang34/Makefile
@@ -36,7 +36,7 @@ PYTHONLIBDIR=	${LLVM_PREFIX}/lib/python
 
 GNU_CONFIGURE=	yes
 GNU_CONFIGURE_PREFIX=	${LLVM_PREFIX}
-USES=		gmake libedit perl5 python
+USES=		gmake groff libedit perl5 python
 USE_LDCONFIG=	yes
 
 MAKE_ARGS=	CLANG_TBLGEN=${WRKSRC}/${RELTYPE}/bin/clang-tblgen \
diff --git a/mail/gnarwl/Makefile b/mail/gnarwl/Makefile
index ed44197655da..612d37319980 100644
--- a/mail/gnarwl/Makefile
+++ b/mail/gnarwl/Makefile
@@ -13,7 +13,7 @@ COMMENT=	Email autoresponder that gets data from LDAP
 LIB_DEPENDS=	libgdbm.so:databases/gdbm
 BUILD_DEPENDS=	${LOCALBASE}/bin/gsed:textproc/gsed
 
-USES=		iconv gmake tar:tgz
+USES=		iconv gmake groff tar:tgz
 USE_OPENLDAP=	yes
 GNU_CONFIGURE=	yes
 CONFIGURE_ARGS=	--with-docdir=${DOCSDIR} --localstatedir="${PREFIX}/var"
diff --git a/math/gnuplot/Makefile b/math/gnuplot/Makefile
index 9625bfc8e848..8129b995603d 100644
--- a/math/gnuplot/Makefile
+++ b/math/gnuplot/Makefile
@@ -14,7 +14,7 @@ LICENSE_NAME=	Gnuplot license
 LICENSE_FILE=	${WRKSRC}/Copyright
 LICENSE_PERMS=	dist-mirror pkg-mirror auto-accept
 
-USES=		iconv lua pkgconfig readline
+USES=		groff iconv lua pkgconfig readline
 USE_TEX=	kpathsea
 GNU_CONFIGURE=	yes
 LDFLAGS+=	-L${LOCALBASE}/lib ${ICONV_LIB}
diff --git a/misc/freebsd-doc-en/Makefile b/misc/freebsd-doc-en/Makefile
index 2ab29e2ae9ed..e54190f86eaf 100644
--- a/misc/freebsd-doc-en/Makefile
+++ b/misc/freebsd-doc-en/Makefile
@@ -13,7 +13,7 @@ COMMENT?=	Documentation from the FreeBSD Documentation Project
 
 BUILD_DEPENDS=	docproj>=2.0_6:textproc/docproj
 
-USES=		uidfix
+USES=		groff uidfix
 WRKSRC=		${WRKDIR}/doc
 PLIST_SUB=	DOCSDIR=${DOCBASE} \
 		DOCLANG=${DOCLANG} \
diff --git a/net/corosync/Makefile b/net/corosync/Makefile
index 812cf0575a72..d73513ffa3d9 100644
--- a/net/corosync/Makefile
+++ b/net/corosync/Makefile
@@ -15,7 +15,7 @@ LICENSE=	BSD3CLAUSE
 LIB_DEPENDS=	libnss3.so:security/nss \
 		libqb.so:devel/libqb
 
-USES=		gmake libtool pathfix pkgconfig
+USES=		gmake groff libtool pathfix pkgconfig
 USE_GCC=	yes	# segfaults when built with Clang
 USE_LDCONFIG=	yes
 USE_RC_SUBR=	${PORTNAME} ${PORTNAME}-notifyd