diff --git a/CMakeLists.txt b/CMakeLists.txt
index 169e011..a135b9a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -246,7 +246,7 @@ ExternalProject_Add (planetblupi_Project
   SOURCE_DIR ${CMAKE_SOURCE_DIR}/planetblupi
   PREFIX ${CMAKE_BINARY_DIR}
   CMAKE_COMMAND ${CMD} cmake
-  CMAKE_ARGS -DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR>
+  CMAKE_ARGS -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE} -DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR>
   INSTALL_DIR ${CMAKE_BINARY_DIR}
   DEPENDS SDL2_Project SDL2_image_Project SDL2_mixer_Project SDL_kitchensink_Project libpng_Project
 )