diff --git a/32/CMakeLists.txt b/32/CMakeLists.txt
index 41f6102..b36dfeb 100644
--- a/32/CMakeLists.txt
+++ b/32/CMakeLists.txt
@@ -1,5 +1,6 @@
 cmake_minimum_required(VERSION 3.0.0)
 project(base1432 VERSION 2.0)
+SET(CMAKE_BUILD_TYPE "Release")
 
 add_library(base1432 STATIC base14.c)
 add_library(base14 SHARED base14.c)
diff --git a/64/CMakeLists.txt b/64/CMakeLists.txt
index 13fc2fc..042a3ac 100644
--- a/64/CMakeLists.txt
+++ b/64/CMakeLists.txt
@@ -1,5 +1,6 @@
 cmake_minimum_required(VERSION 3.0.0)
 project(base1464 VERSION 2.0)
+SET(CMAKE_BUILD_TYPE "Release")
 
 add_library(base1464 STATIC base14.c)
 add_library(base14 SHARED base14.c)
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2864b6f..8cff5df 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,6 @@
 cmake_minimum_required(VERSION 3.0.0)
 project(base16384 VERSION 2.0)
+SET(CMAKE_BUILD_TYPE "Release")
 
 add_executable(base16384 base16384.c)