diff --git a/core/etc/grs/world.conf b/core/etc/grs/world.conf
index 3e7db5f..9f05221 100644
--- a/core/etc/grs/world.conf
+++ b/core/etc/grs/world.conf
@@ -879,6 +879,8 @@ package.use : media-libs/libbluray:0 -aacs -bdplus -java -udf fontconfig static-
 
 [media-libs/libcaca:0]
 package.use : media-libs/libcaca:0 -doc -java -mono -ruby -test -truetype X cxx imlib ncurses opengl python slang static-libs
+package.env : media-libs/libcaca:0 media-libs_libcaca_0
+env : CPPFLAGS="-std=gnu++11"
 
 [media-libs/libcanberra:0]
 package.use : media-libs/libcanberra:0 -gnome -gstreamer -pulseaudio -tdb -udev alsa gtk gtk3 oss sound