diff --git a/CMakeLists.txt b/CMakeLists.txt
index 89a3386f7..9a7e1031b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -32,7 +32,7 @@ if (MSVC)
   # /wd4244  conversion from 'type1' to 'type2'
   # /wd4267  conversion from 'size_t' to 'type2'
   # /wd4800  force value to bool 'true' or 'false' (performance warning)
-  add_compile_options(/W3 /WX /wd4005 /wd4068 /wd4244 /wd4267 /wd4800)
+  add_compile_options(/W3 /wd4005 /wd4068 /wd4244 /wd4267 /wd4800)
   add_definitions(/DNOMINMAX /DWIN32_LEAN_AND_MEAN=1 /D_CRT_SECURE_NO_WARNINGS /D_SCL_SECURE_NO_WARNINGS)
 else()
   set(ABSL_STD_CXX_FLAG "-std=c++11" CACHE STRING "c++ std flag (default: c++11)")
diff --git a/absl/copts.bzl b/absl/copts.bzl
index 0168ac5ab..259de30c2 100644
--- a/absl/copts.bzl
+++ b/absl/copts.bzl
@@ -116,7 +116,6 @@ LLVM_TEST_FLAGS = [
 
 MSVC_FLAGS = [
     "/W3",
-    "/WX",
     "/wd4005",  # macro-redefinition
     "/wd4068",  # unknown pragma
     "/wd4244",  # conversion from 'type1' to 'type2', possible loss of data