diff --git a/Tests/XCTest/CMakeLists.txt b/Tests/XCTest/CMakeLists.txt
index d40c40e2ab..d0b07ea1ca 100644
--- a/Tests/XCTest/CMakeLists.txt
+++ b/Tests/XCTest/CMakeLists.txt
@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.1)
-project(XCTest)
+project(XCTest C)
 enable_testing()
 
 find_package(XCTest REQUIRED)