diff --git a/CMakeLists.txt b/CMakeLists.txt
index 62ce5bec3b..b17bce0d64 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 2.6.4)
 
-project (SakuraEditor)
+project (SakuraEditor LANGUAGES CXX)
 
 set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
diff --git a/HeaderMake/CMakeLists.txt b/HeaderMake/CMakeLists.txt
index 00ecf5fb3c..d0a14fcf6a 100644
--- a/HeaderMake/CMakeLists.txt
+++ b/HeaderMake/CMakeLists.txt
@@ -4,7 +4,7 @@ cmake_minimum_required(VERSION 2.6.4)
 set( project_name HeaderMake)
 
 # define a project name
-project (${project_name})
+project (${project_name} LANGUAGES CXX)
 
 # define a variable SOURCE_FILES with file GLOB
 file(GLOB SOURCE_FILES *.cpp *.h)
diff --git a/MakefileMake/CMakeLists.txt b/MakefileMake/CMakeLists.txt
index 12aaa4274f..998f893ce6 100644
--- a/MakefileMake/CMakeLists.txt
+++ b/MakefileMake/CMakeLists.txt
@@ -4,7 +4,7 @@ cmake_minimum_required(VERSION 2.6.4)
 set( project_name MakefileMake)
 
 # define a project name
-project (${project_name})
+project (${project_name} LANGUAGES CXX)
 
 # define a variable SOURCE_FILES with file GLOB
 file(GLOB SOURCE_FILES *.cpp *.h)
diff --git a/sakura_core/CMakeLists.txt b/sakura_core/CMakeLists.txt
index 9c32d26d97..6b1cd05c1b 100644
--- a/sakura_core/CMakeLists.txt
+++ b/sakura_core/CMakeLists.txt
@@ -4,7 +4,7 @@ cmake_minimum_required(VERSION 3.0.2)
 set(project_name sakura)
 
 # define a project name
-project (${project_name})
+project (${project_name} LANGUAGES CXX)
 
 # set the project as the startup project
 set_property(DIRECTORY PROPERTY VS_STARTUP_PROJECT ${project_name})
diff --git a/sakura_lang_en_US/CMakeLists.txt b/sakura_lang_en_US/CMakeLists.txt
index 2c80130383..b1f0cebcb6 100644
--- a/sakura_lang_en_US/CMakeLists.txt
+++ b/sakura_lang_en_US/CMakeLists.txt
@@ -4,7 +4,7 @@ cmake_minimum_required(VERSION 2.6.4)
 set(project_name sakura_lang_en_US)
 
 # define a project name
-project (${project_name})
+project (${project_name} LANGUAGES CXX)
 
 include_directories(./)