diff --git a/src/cairo-pdf-surface.c b/src/cairo-pdf-surface.c
index 04f5e7378..68d0e7c15 100644
--- a/src/cairo-pdf-surface.c
+++ b/src/cairo-pdf-surface.c
@@ -1665,7 +1665,7 @@ _cairo_pdf_surface_emit_type1_font_subset (cairo_pdf_surface_t		*surface,
 				 "   /Widths [",
 				 subset_resource.id,
 				 subset.base_font,
-				 font_subset->num_glyphs,
+				 font_subset->num_glyphs - 1,
 				 descriptor.id);
 
     for (i = 0; i < font_subset->num_glyphs; i++)