diff --git a/icu4c/source/layout/IndicClassTables.cpp b/icu4c/source/layout/IndicClassTables.cpp
index 662f58a9281..44430903ff1 100644
--- a/icu4c/source/layout/IndicClassTables.cpp
+++ b/icu4c/source/layout/IndicClassTables.cpp
@@ -271,7 +271,7 @@ static const IndicClassTable kndaClassTable = {0x0C80, 0x0CEF, 4, KNDA_SCRIPT_FL
 
 static const IndicClassTable mlymClassTable = {0x0D00, 0x0D6F, 3, MLYM_SCRIPT_FLAGS, mlymCharClasses, mlymSplitTable};
 
-static const IndicClassTable sinhClassTable = {0x0D80, 0x0DF4, 3, SINH_SCRIPT_FLAGS, sinhCharClasses, sinhSplitTable};
+static const IndicClassTable sinhClassTable = {0x0D80, 0x0DF4, 4, SINH_SCRIPT_FLAGS, sinhCharClasses, sinhSplitTable};
 
 //
 // IndicClassTable addresses