diff --git a/BasiliskII/src/Unix/CMakeLists.txt b/BasiliskII/src/Unix/CMakeLists.txt
index eb217226..e222edc3 100644
--- a/BasiliskII/src/Unix/CMakeLists.txt
+++ b/BasiliskII/src/Unix/CMakeLists.txt
@@ -1,6 +1,11 @@
 cmake_minimum_required(VERSION 3.0.0)
 project(BasiliskII)
 
+if (NOT EXISTS ${CMAKE_BINARY_DIR}/CMakeCache.txt)
+	if (NOT CMAKE_BUILD_TYPE)
+		set(CMAKE_BUILD_TYPE "Release" CACHE STRING "" FORCE)
+	endif()
+endif()
 
 find_package(SDL2 REQUIRED)
 find_library(COREFOUNDATION_LIBRARY CoreFoundation)