diff --git a/OTFbuild/opentype_features.py b/OTFbuild/opentype_features.py
index 9cb2530..ea291bd 100644
--- a/OTFbuild/opentype_features.py
+++ b/OTFbuild/opentype_features.py
@@ -273,7 +273,7 @@ def _generate_hangul_gsub(glyphs, has, jamo_data):
             continue
         for f in [0, 1]:
             try:
-                row_ng = SC.get_han_initial_row(1, idx, f)
+                row_ng = SC.get_han_initial_row(2, idx, f)
             except (ValueError, KeyError):
                 continue
             jung_groups_general.setdefault((row_ng, f), []).append(jcp)