diff --git a/print/R-cran-knitr/Makefile b/print/R-cran-knitr/Makefile
index a85a7d517721..bef7c5699075 100644
--- a/print/R-cran-knitr/Makefile
+++ b/print/R-cran-knitr/Makefile
@@ -1,40 +1,45 @@
 PORTNAME=	knitr
 DISTVERSION=	1.49
 CATEGORIES=	print
 DISTNAME=	${PORTNAME}_${PORTVERSION}
 
 MAINTAINER=	uzsolt@FreeBSD.org
 COMMENT=	General-Purpose Package for Dynamic Report Generation in R
 WWW=		https://cran.r-project.org/web/packages/knitr/
 
 LICENSE=	GPLv2+
 
 CRAN_DEPENDS=	R-cran-evaluate>=0.15:devel/R-cran-evaluate \
 		R-cran-highr>=0.11:textproc/R-cran-highr \
 		R-cran-xfun>=0.48:misc/R-cran-xfun \
 		R-cran-yaml>=2.1.19:textproc/R-cran-yaml
 BUILD_DEPENDS=	${CRAN_DEPENDS}
 RUN_DEPENDS=	${CRAN_DEPENDS}
 TEST_DEPENDS=	R-cran-bslib>0:www/R-cran-bslib \
 		R-cran-DBI>=0.4:databases/R-cran-DBI \
 		R-cran-digest>0:security/R-cran-digest \
 		R-cran-formatR>0:textproc/R-cran-formatR \
 		R-cran-htmlwidgets>=0.7:www/R-cran-htmlwidgets \
 		R-cran-jpeg>0:graphics/R-cran-jpeg \
+		R-cran-litedown>0:textproc/R-cran-litedown \
 		R-cran-magick>0:graphics/R-cran-magick \
 		R-cran-markdown>=1.3:textproc/R-cran-markdown \
 		R-cran-png>0:graphics/R-cran-png \
 		R-cran-ragg>0:graphics/R-cran-ragg \
 		R-cran-rlang>0:devel/R-cran-rlang \
 		R-cran-rmarkdown>0:textproc/R-cran-rmarkdown \
 		R-cran-rstudioapi>0:devel/R-cran-rstudioapi \
 		R-cran-sass>0:textproc/R-cran-sass \
 		R-cran-testit>0:devel/R-cran-testit \
 		R-cran-tibble>0:devel/R-cran-tibble \
 		R-cran-tinytex>=0.46:print/R-cran-tinytex \
 		R-cran-webshot>0:www/R-cran-webshot
-TESTING_UNSAFE=	Required some packages that are not available in ports tree
 
 USES=		cran:auto-plist
 
+do-test:
+	@${FIND} ${WRKSRC} \( -name '*.o' -o -name '*.so' \) -delete
+	@cd ${WRKDIR} ; ${SETENV} ${MAKE_ENV} _R_CHECK_FORCE_SUGGESTS_=FALSE \
+	${LOCALBASE}/bin/R CMD check --no-manual ${PORTNAME}
+
 .include <bsd.port.mk>