diff --git a/sources/NotoSansTaiTham.glyphs b/sources/NotoSansTaiTham.glyphs
index 427e9a0..de67e09 100644
--- a/sources/NotoSansTaiTham.glyphs
+++ b/sources/NotoSansTaiTham.glyphs
@@ -1701,7 +1701,7 @@ value = 0;
 },
 {
 name = winAscent;
-value = 1034;
+value = 1079;
 },
 {
 name = winDescent;