diff --git a/src/ftfont.h b/src/ftfont.h
index c94a1f24b2b..6a1ca92f4d8 100644
--- a/src/ftfont.h
+++ b/src/ftfont.h
@@ -25,6 +25,9 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #include <ft2build.h>
 #include FT_FREETYPE_H
 #include FT_SIZES_H
+#ifdef FT_BDF_H
+#include FT_BDF_H
+#endif
 
 #ifdef HAVE_LIBOTF
 #include <otf.h>