diff --git a/colorchord2/windows/compile-clang.bat b/colorchord2/windows/compile-clang.bat
index 0fcb356..648872f 100644
--- a/colorchord2/windows/compile-clang.bat
+++ b/colorchord2/windows/compile-clang.bat
@@ -1,5 +1,5 @@
 set CC="C:\Program Files\LLVM\bin\clang.exe"
-set CCFLAGS=-g -D_CRT_SECURE_NO_WARNINGS -Wno-deprecated-declarations -DICACHE_FLASH_ATTR= -Dstrdup=_strdup
+set CCFLAGS=-g -D_CRT_SECURE_NO_WARNINGS -Wno-deprecated-declarations -DICACHE_FLASH_ATTR= -Dstrdup=_strdup -DNO_WIN_HEADERS
 set CCIFLAGS=-I../../embeddedcommon -I../cnfa -I../rawdraw -I../ -O1
 set CCLFLAGS=-lwinmm -lgdi32 -lws2_32 -lsetupapi -lkernel32 -luser32 -ldbghelp -lole32 -lmmdevapi -lAvrt
 set SOURCES=../main.c  ../dft.c ../decompose.c ../filter.c ../color.c ../notefinder.c ../util.c ../outdrivers.c ^