diff --git a/CMakeLists.txt b/CMakeLists.txt
index 20581478f..958fa6f75 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,7 +10,7 @@
 cmake_minimum_required(VERSION 3.9 FATAL_ERROR)
 
 project(rgbds
-        LANGUAGES CXX)
+        LANGUAGES C CXX)
 
 # get real path of source and binary directories
 get_filename_component(srcdir "${CMAKE_SOURCE_DIR}" REALPATH)