diff --git a/src/main.cc b/src/main.cc
index 5bc1c7b75..33ea2c9b5 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -217,7 +217,7 @@ layered_glyph_dump (hb_font_t *font, hb_draw_funcs_t *funcs, unsigned face_index
       {
 	hb_font_extents_t font_extents;
 	hb_font_get_extents_for_direction (font, HB_DIRECTION_LTR, &font_extents);
-	hb_glyph_extents_t extents = {0};
+	hb_glyph_extents_t extents = {0, 0, 0, 0};
 	if (!hb_font_get_glyph_extents (font, gid, &extents))
 	{
 	  printf ("Skip gid: %u\n", gid);
@@ -267,7 +267,7 @@ dump_glyphs (hb_font_t *font, hb_draw_funcs_t *funcs, unsigned face_index)
   {
     hb_font_extents_t font_extents;
     hb_font_get_extents_for_direction (font, HB_DIRECTION_LTR, &font_extents);
-    hb_glyph_extents_t extents = {0};
+    hb_glyph_extents_t extents = {0, 0, 0, 0};
     if (!hb_font_get_glyph_extents (font, gid, &extents))
     {
       printf ("Skip gid: %u\n", gid);