diff --git a/txt/src/txt/paragraph_txt.cc b/txt/src/txt/paragraph_txt.cc
index 9969aa3524f44fb9936c36b28cea72a367e75faf..33af8c9e206dd32df69e5eb6dd615fee6bae7b8f 100644
--- a/txt/src/txt/paragraph_txt.cc
+++ b/txt/src/txt/paragraph_txt.cc
@@ -2353,7 +2353,7 @@ Paragraph::PositionWithAffinity ParagraphTxt::GetGlyphPositionAtCoordinate(
     }
   }
 
-  double glyph_center = (gp->x_pos.start + gp->x_pos.end) * paragraph_style_.text_split_ratio;
+  double glyph_center = (gp->x_pos.end - gp->x_pos.start) * paragraph_style_.text_split_ratio + gp->x_pos.start;
   if ((direction == TextDirection::ltr && dx < glyph_center) ||
       (direction == TextDirection::rtl && dx >= glyph_center)) {
     return PositionWithAffinity(gp->code_units.start, DOWNSTREAM);