diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2bfe35f..0999294 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -19,9 +19,11 @@ if(NOT CMAKE_BUILD_TYPE)
   set(CMAKE_BUILD_TYPE Release)
 endif()
 
-set(CMAKE_CXX_FLAGS "-W -Wall -Wextra -ansi -pedantic -std=c++11")
-set(CMAKE_CXX_FLAGS_DEBUG "-g")
-set(CMAKE_CXX_FLAGS_RELEASE "-O3")
+if(NOT WIN32)
+  set(CMAKE_CXX_FLAGS "-W -Wall -Wextra -ansi -pedantic -std=c++11")
+  set(CMAKE_CXX_FLAGS_DEBUG "-g")
+  set(CMAKE_CXX_FLAGS_RELEASE "-O3")
+endif()
 
 option(LIBZIPPP_INSTALL "Install library" ${is_root_project})
 option(LIBZIPPP_INSTALL_HEADERS "Install the headers" ${is_root_project})