diff --git a/bin/build_wasm.bat b/bin/build_wasm.bat
index 0209807d..dc32e9ba 100644
--- a/bin/build_wasm.bat
+++ b/bin/build_wasm.bat
@@ -1,8 +1,8 @@
 mkdir ..\wasm
 cd ..\wasm
-call emcc ..\BeefRT\rt\Math.cpp ..\BeefRT\rt\Object.cpp ..\BeefRT\rt\Thread.cpp ..\BeefRT\rt\Internal.cpp ..\BeefySysLib\platform\wasm\WasmCommon.cpp ..\BeefySysLib\Common.cpp ..\BeefySysLib\util\String.cpp ..\BeefySysLib\util\UTF8.cpp ..\BeefySysLib\third_party\utf8proc\utf8proc.c -I..\ -I..\BeefySysLib -I..\BeefySysLib\platform\wasm -g -DBF_DISABLE_FFI -c -s WASM=1 -s USE_PTHREADS=1
+call emcc ..\BeefRT\rt\Chars.cpp ..\BeefRT\rt\Math.cpp ..\BeefRT\rt\Object.cpp ..\BeefRT\rt\Thread.cpp ..\BeefRT\rt\Internal.cpp ..\BeefySysLib\platform\wasm\WasmCommon.cpp ..\BeefySysLib\Common.cpp ..\BeefySysLib\util\String.cpp ..\BeefySysLib\util\UTF8.cpp ..\BeefySysLib\third_party\utf8proc\utf8proc.c -I..\ -I..\BeefySysLib -I..\BeefySysLib\platform\wasm -g -DBF_DISABLE_FFI -c -s WASM=1 -s USE_PTHREADS=1
 @IF %ERRORLEVEL% NEQ 0 GOTO HADERROR
-call emar r ..\IDE\dist\Beef042RT32_wasm.a Common.o Internal.o Math.o Object.o String.o Thread.o UTF8.o utf8proc.o WasmCommon.o
+call emar r ..\IDE\dist\Beef042RT32_wasm.a Common.o Internal.o Chars.o Math.o Object.o String.o Thread.o UTF8.o utf8proc.o WasmCommon.o
 @IF %ERRORLEVEL% NEQ 0 GOTO HADERROR
 
 :SUCCESS