Compatibility with CMake 2.8.12
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1be3bd8..54f94ea 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -3,7 +3,7 @@
 INCLUDE(GNUInstallDirs)
 
 # ---[ Project and semantic versioning.
-PROJECT(cpuinfo LANGUAGES C CXX)
+PROJECT(cpuinfo C CXX)
 
 # ---[ Options.
 OPTION(CPUINFO_BUILD_TOOLS "Build command-line tools" ON)