diff --git a/indra/cmake/00-Common.cmake b/indra/cmake/00-Common.cmake
index e9868cfea..32be5e4b4 100644
--- a/indra/cmake/00-Common.cmake
+++ b/indra/cmake/00-Common.cmake
@@ -108,7 +108,7 @@ if (WINDOWS)
   endif (USE_LTO)
 
   if (WORD_SIZE EQUAL 32)
-    add_compile_options(/arch:SSE3)
+    add_compile_options(/arch:SSE2)
   endif (WORD_SIZE EQUAL 32)
 
   if (NOT DISABLE_FATAL_WARNINGS)