diff --git a/CMakeLists.txt b/CMakeLists.txt
index c65cfc90..a9bf60f9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -333,7 +333,7 @@ if(GENERATE_OFFTI)
 endif()
 
 if(MSVC)
-    set(EXTRA_CXXFLAGS "/W0 /wd4996 /GF /GR- /RTC1")
+    set(EXTRA_CXXFLAGS "/W0 /wd4996 /GF /GR-")
 else()
     set(EXTRA_CXXFLAGS "-fexceptions")
 endif()