diff --git a/games/x11/xneko/Makefile b/games/x11/xneko/Makefile
index a8a9a18e6f9c..ff9fb86b61b2 100644
--- a/games/x11/xneko/Makefile
+++ b/games/x11/xneko/Makefile
@@ -3,6 +3,7 @@
 PROG=	xneko
 MAN6=	xneko.6
 DPADD+=		${X11BASE}/lib/libX11.a ${LIBM}
+CFLAGS+=	-I${X11BASE}/include
 LDDESTDIR+=	-L${X11BASE}/lib
 LDADD+=		-lX11 -lm
 
diff --git a/games/x11/xroach/Makefile b/games/x11/xroach/Makefile
index dc762c8507ac..9a5dd6f20a6a 100644
--- a/games/x11/xroach/Makefile
+++ b/games/x11/xroach/Makefile
@@ -2,7 +2,7 @@
 
 PROG=	xroach
 MAN6=	xroach.6
-CFLAGS+= -I${.CURDIR}/bitmaps
+CFLAGS+=	-I${.CURDIR}/bitmaps -I${X11BASE}/include
 DPADD+=		${X11BASE}/lib/libX11.a ${LIBM}
 LDDESTDIR+=	-L${X11BASE}/lib
 LDADD+=		-lX11 -lm