diff --git a/CMakeLists.txt b/CMakeLists.txt
index 59b64884..7c4466aa 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -11,6 +11,7 @@ if (NOT DEFINED CMAKE_BUILD_TYPE)
   set (CMAKE_BUILD_TYPE Release CACHE STRING "Build type")
 endif ()
 
+
 list (APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake)
 list (APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake)
 
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 397bb461..a97682be 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -52,6 +52,12 @@ else ()
   add_library (cmaes STATIC ${LIBCMAES_SOURCES})
 endif ()
 
+
+target_compile_options(cmaes 
+  PRIVATE 
+  $<$<NOT:$<CXX_COMPILER_ID:MSVC>>:-Wall -Wextra> 
+  $<$<CXX_COMPILER_ID:MSVC>:/W4> )
+
 target_include_directories (
   cmaes PUBLIC $<BUILD_INTERFACE:${PROJECT_BINARY_DIR}/include>
                $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>