diff --git a/CMakeLists.txt b/CMakeLists.txt
index d0d265cbb5c4ae8598c5a42ec0850f72cbeff1c9..8c5f143b074ea68c4a1a86f60060115a10056e8d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -49,6 +49,7 @@ ExternalProject_Add(Darwin
     GIT_TAG             origin/master
     SOURCE_DIR          "${CMAKE_SOURCE_DIR}/Darwin"
     CMAKE_ARGS          -DCMAKE_INSTALL_PREFIX=<INSTALL_DIR> -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
+    BINARY_DIR          "${CMAKE_SOURCE_DIR}/Darwin.build"
     INSTALL_DIR         "${CMAKE_INSTALL_PREFIX}"
     TEST_AFTER_INSTALL  ON
 )