diff --git a/dlls/kernel32/nls/sin.nls b/dlls/kernel32/nls/sin.nls
index 36dd2817a2e..033dbc0d7ea 100644
--- a/dlls/kernel32/nls/sin.nls
+++ b/dlls/kernel32/nls/sin.nls
@@ -20,7 +20,7 @@
 
 #pragma code_page(65001) /* UTF-8 */
 
-STRINGTABLE LANGUAGE LANG_SINHALESE, SUBLANG_DEFAULT
+STRINGTABLE LANGUAGE LANG_SINHALESE, SUBLANG_SINHALESE_SRI_LANKA
 {
   LOCALE_FONTSIGNATURE L"\x002f\x8010\x3808\x0000\x0000\x0000\x0000\x0000\x0001\x0000\x0000\x4000\x0003\x0000\x0000\xc5d4"
   LOCALE_ICALENDARTYPE "1"