diff --git a/CMakeLists.txt b/CMakeLists.txt
index ef0270d1..319e7f47 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -27,7 +27,6 @@ cmake_dependent_option(MORE_WARNINGS "Turn on more warnings" OFF !MSVC OFF)
 
 if(MSVC)
   add_compile_options(
-    /MP # Build multiple files in parallel.
     /wd5030 # Warning C5030 is about unknown attributes (`[[gnu::ATTR]]`), none of ours being load-bearing.
     /wd4996 # Warning C4996 is about using POSIX names, which we want to do for portability.
     /Zc:preprocessor # Opt into the C++20-conformant preprocessor.