diff --git a/gsk/ngl/gsknglglyphlibrary.c b/gsk/ngl/gsknglglyphlibrary.c
index 2179a804d7..3f998f4a05 100644
--- a/gsk/ngl/gsknglglyphlibrary.c
+++ b/gsk/ngl/gsknglglyphlibrary.c
@@ -318,7 +318,7 @@ gsk_ngl_glyph_library_add (GskNglGlyphLibrary      *self,
                                         sizeof *value,
                                         width,
                                         height,
-                                        0,
+                                        1,
                                         &packed_x, &packed_y);
 
   memcpy (&value->ink_rect, &ink_rect, sizeof ink_rect);