diff --git a/tools/build.bat b/tools/build.bat
index 236eaa9f..79aa0c1d 100644
--- a/tools/build.bat
+++ b/tools/build.bat
@@ -1,12 +1,12 @@
 @echo off
 
-cl /WX /MD /TC bin\mirth0.c /Fobin\wmirth0.obj  /Febin\wmirth0.exe /link legacy_stdio_definitions.lib /WX || goto :error
+cl /WX /MD /TC bin\mirth0.c /F80000000 /Fobin\wmirth0.obj /Febin\wmirth0.exe /link legacy_stdio_definitions.lib /WX || goto :error
 bin\wmirth0.exe src\main.mth -o bin\wmirth1.c || goto :error
 
-cl /WX /MD /TC bin\wmirth1.c /Fobin\wmirth1.obj /Febin\wmirth1.exe /link legacy_stdio_definitions.lib /WX || goto :error
+cl /WX /MD /TC bin\wmirth1.c /F8000000 /Fobin\wmirth1.obj /Febin\wmirth1.exe /link legacy_stdio_definitions.lib /WX || goto :error
 bin\wmirth1.exe src\main.mth -o bin\wmirth2.c || goto :error
 
-cl /WX /W2 /MD /TC bin\wmirth2.c /Fobin\wmirth2.obj /Febin\wmirth2.exe /link legacy_stdio_definitions.lib /WX || goto :error
+cl /WX /W2 /MD /TC bin\wmirth2.c /F8000000 /Fobin\wmirth2.obj /Febin\wmirth2.exe /link legacy_stdio_definitions.lib /WX || goto :error
 bin\wmirth2.exe src\main.mth -o bin\wmirth3.c || goto :error
 
 goto :EOF