diff --git a/swig/python3/CMakeLists.txt b/swig/python3/CMakeLists.txt
index cbad9f9..1aba788 100644
--- a/swig/python3/CMakeLists.txt
+++ b/swig/python3/CMakeLists.txt
@@ -6,6 +6,9 @@ include_directories(${PYTHON_INCLUDE_PATH})
 include_directories(${CMAKE_CURRENT_SOURCE_DIR})
 
 set(CMAKE_SWIG_FLAGS "-module" "openscap_py")
+if (WIN32)
+	list(APPEND CMAKE_SWIG_FLAGS "-D_WIN32")
+endif()
 if (${CMAKE_VERSION} VERSION_LESS "3.8.0")
 	swig_add_module(openscap_py python ../openscap.i)
 else()
@@ -17,7 +20,7 @@ if (${CMAKE_C_COMPILER_ID} STREQUAL "GNU" OR ${CMAKE_C_COMPILER_ID} STREQUAL "Cl
 endif()
 
 add_custom_command(OUTPUT ${PYTHON_COMPILED_FILES}
-	COMMAND cp ${CMAKE_CURRENT_SOURCE_DIR}/../openscap_api.py ${CMAKE_CURRENT_BINARY_DIR}
+	COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_CURRENT_SOURCE_DIR}/../openscap_api.py ${CMAKE_CURRENT_BINARY_DIR}
 	COMMAND ${PYTHON_EXECUTABLE} -m compileall ${CMAKE_CURRENT_BINARY_DIR}
 	COMMAND ${PYTHON_EXECUTABLE} -O -m compileall ${CMAKE_CURRENT_BINARY_DIR}
 	DEPENDS ${SWIG_MODULE_openscap_py_REAL_NAME}