diff --git a/deskutils/gnome-clocks/Makefile b/deskutils/gnome-clocks/Makefile
index 49fd8f69078b..fb07c2a473a6 100644
--- a/deskutils/gnome-clocks/Makefile
+++ b/deskutils/gnome-clocks/Makefile
@@ -22,8 +22,8 @@ LIB_DEPENDS=	libgeoclue-2.so:net/geoclue \
 
 PORTSCOUT=	limitw:1,even
 
-USES=		gettext gnome localbase meson pkgconfig python:3.4+,build \
-		shebangfix tar:xz
+USES=		compiler:c11 gettext gnome localbase meson pkgconfig \
+		python:3.4+,build shebangfix tar:xz
 USE_LDCONFIG=	yes
 USE_GNOME=	cairo gnomedesktop3 gsound
 INSTALLS_ICONS=	yes