diff --git a/CMakeLists.txt b/CMakeLists.txt
index f58de202..1704e2b6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-project(motion)
+project(motion C)
 cmake_minimum_required(VERSION 2.8)
 include(CheckIncludeFiles)