diff --git a/devel/qt5-assistant/Makefile b/devel/qt5-assistant/Makefile
index 5f3ec75199b0..c40fdd395281 100644
--- a/devel/qt5-assistant/Makefile
+++ b/devel/qt5-assistant/Makefile
@@ -1,29 +1,30 @@
 PORTNAME=	assistant
 PORTVERSION=	${QT5_VERSION}${QT5_KDE_PATCH}
 CATEGORIES=	devel
 PKGNAMEPREFIX=	qt5-
 
 MAINTAINER=	kde@FreeBSD.org
 COMMENT=	Qt 5 documentation browser
 
-USES=		compiler:c++11-lang qmake qt-dist:5,tools
+USES=		compiler:c++11-lang perl5 qmake qt-dist:5,tools
+USE_PERL5=	build
 USE_QT=		core gui help network printsupport sql widgets \
 		buildtools:build sql-sqlite3:run
 QT_BINARIES=	yes
 
 DESKTOP_ENTRIES="Qt 5 Assistant" "" \
 		"${PREFIX}/share/pixmaps/assistant-qt5.png" \
 		"${PREFIX}/${QT_BINDIR_REL}/assistant" \
 		"Development;Qt;" true
 
 BUILD_WRKSRC=	${WRKSRC}/src/${PORTNAME}/${PORTNAME}
 INSTALL_WRKSRC=	${WRKSRC}/src/${PORTNAME}/${PORTNAME}
 
 # Link in QtHelp port
 _QT5_ADDITIONAL_LINK=	help
 
 post-install:
 	${INSTALL_DATA} ${INSTALL_WRKSRC}/images/assistant-128.png \
 		${STAGEDIR}${PREFIX}/share/pixmaps/assistant-qt5.png
 
 .include <bsd.port.mk>