diff --git a/vars/build.vars b/vars/build.vars
index 09427cb..90fc9a8 100644
--- a/vars/build.vars
+++ b/vars/build.vars
@@ -946,7 +946,9 @@ ubase which zsh";
 : ${PKG_TERMINALLY_TETRIS_IN_TREE:=1};
 : ${PKG_TERMINALLY_TETRIS_BUILD_STEPS_DISABLE:=install_make};
 : ${PKG_TERMINALLY_TETRIS_INSTALL_FILES:="../terminally_tetris/build/ttetris=bin/ ../terminally_tetris/man/ttetris.1=share/man/man1/"};
-: ${PKG_TERMINALLY_TETRIS_CFLAGS_BUILD_EXTRA:="-g3 -O0"};
+: ${PKG_TERMINALLY_TETRIS_CFLAGS_BUILD_EXTRA:="-std=gnu99 -g3 -O0 -I${PREFIX_NATIVE}/include -I${PREFIX_NATIVE}/include/ncurses"};
+: ${PKG_TERMINALLY_TETRIS_LDFLAGS_BUILD_EXTRA:="-L${PREFIX_NATIVE}/lib -lncurses"};
+: ${PKG_TERMINALLY_TETRIS_MAKEFLAGS_BUILD_EXTRA:=C=${DEFAULT_TARGET}-gcc};
 : ${PKG_UBASE_URLS_GIT:="ubase=http://git.suckless.org/ubase@master"};
 : ${PKG_UBASE_DESTDIR:=destdir/suckless};
 : ${PKG_UBASE_IN_TREE:=1};