diff --git a/japanese/kasumi/Makefile b/japanese/kasumi/Makefile
index c892797b2ca..b263fd2af41 100644
--- a/japanese/kasumi/Makefile
+++ b/japanese/kasumi/Makefile
@@ -19,6 +19,7 @@ WANTLIB += gobject-2.0 gtk-x11-2.0 iconv intl m pango-1.0 pangocairo-1.0
 WANTLIB += pangoft2-1.0 pthread ${COMPILER_LIBCXX} z harfbuzz
 
 COMPILER =		base-clang ports-gcc base-gcc
+CXXFLAGS_base-clang =	-std=c++14
 
 BUILD_DEPENDS =	devel/gettext,-tools
 RUN_DEPENDS =	devel/desktop-file-utils