diff --git a/CMakeLists.txt b/CMakeLists.txt
index 141d0b35b..18f3ba0bf 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -26,7 +26,7 @@ include_directories(${CMAKE_SOURCE_DIR}/src/gba)
 include_directories(${CMAKE_SOURCE_DIR}/src)
 
 if(NOT CMAKE_BUILD_TYPE)
-	set(CMAKE_BUILD_TYPE Release CACHE STRING "Build type (e.g. Release or Debug)")
+	set(CMAKE_BUILD_TYPE Release CACHE STRING "Build type (e.g. Release or Debug)" FORCE)
 endif()
 
 include(GNUInstallDirs)