diff --git a/Tests/images/test_y_offset.png b/Tests/images/test_y_offset.png
index 5a166be8c2e..2d57890cb5f 100644
Binary files a/Tests/images/test_y_offset.png and b/Tests/images/test_y_offset.png differ
diff --git a/src/_imagingft.c b/src/_imagingft.c
index 0b7e447309a..fece7ad7d8c 100644
--- a/src/_imagingft.c
+++ b/src/_imagingft.c
@@ -659,8 +659,8 @@ font_getsize(FontObject* self, PyObject* args)
 
         FT_Get_Glyph(face->glyph, &glyph);
         FT_Glyph_Get_CBox(glyph, FT_GLYPH_BBOX_SUBPIXELS, &bbox);
-        bbox.yMax -= glyph_info[i].y_offset;
-        bbox.yMin -= glyph_info[i].y_offset;
+        bbox.yMax += glyph_info[i].y_offset;
+        bbox.yMin += glyph_info[i].y_offset;
         if (bbox.yMax > y_max)
             y_max = bbox.yMax;
         if (bbox.yMin < y_min)