diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9da519f79..635572580 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -24,7 +24,7 @@
 #
 
 cmake_minimum_required(VERSION 2.8.9)
-project(Magnum)
+project(Magnum CXX)
 
 # Find Corrade first so we can check on the target
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/modules/")
diff --git a/doc/generated/CMakeLists.txt b/doc/generated/CMakeLists.txt
index 1da6f273f..3202ef4b3 100644
--- a/doc/generated/CMakeLists.txt
+++ b/doc/generated/CMakeLists.txt
@@ -24,7 +24,7 @@
 #
 
 cmake_minimum_required(VERSION 2.8.9)
-project(MyApplication)
+project(MyApplication CXX)
 
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/../../modules/")