diff --git a/a/CMakeLists.txt b/b/CMakeLists.txt
index 9317f97..c17a97f 100644
--- a/a/CMakeLists.txt
+++ b/b/CMakeLists.txt
@@ -71,11 +71,6 @@ if(CPR_ENABLE_CPPCHECK)
     include(cmake/cppcheck.cmake)
 endif()
 
-if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
-else()
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -Wpedantic -Werror")
-endif()
-
 # SSL
 if(CPR_ENABLE_SSL)
     if(CPR_FORCE_OPENSSL_BACKEND OR CPR_FORCE_WINSSL_BACKEND OR CPR_FORCE_DARWINSSL_BACKEND OR CPR_FORCE_MBEDTLS_BACKEND)