diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6af68762..bf065246 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -46,9 +46,11 @@ set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
 
 if(MSVC)
     add_compile_options(/Zc:threadSafeInit-)
-    add_compile_options(/arch:IA32)
+    add_compile_options(/arch:SSE2)
     # Statically link Microsoft's CRT.
     set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
+else()
+    add_compile_options(-msse2)
 endif()
 
 # FIXME