diff --git a/ZlibConfig.cmake b/ZlibConfig.cmake
index 00d5e6a..45f7c3a 100644
--- a/ZlibConfig.cmake
+++ b/ZlibConfig.cmake
@@ -1,8 +1,8 @@
 configure_file(CMakeLists.txt.zlib zlib/CMakeLists.txt)
 execute_process(COMMAND ${CMAKE_COMMAND} -G ${CMAKE_GENERATOR} .
         WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/zlib)
-execute_process(COMMAND ${CMAKE_COMMAND} --build .
+execute_process(COMMAND ${CMAKE_COMMAND} --build . --config Release
         WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/zlib )
 
 set(ZLIB_ROOT ${CMAKE_CURRENT_BINARY_DIR}/zlib/install)
-include_directories( ${CMAKE_CURRENT_BINARY_DIR}/zlib/install/include)
\ No newline at end of file
+include_directories( ${CMAKE_CURRENT_BINARY_DIR}/zlib/install/include)