diff --git a/source/amx/CMakeLists.txt b/source/amx/CMakeLists.txt
index f90fc94..608cbdb 100644
--- a/source/amx/CMakeLists.txt
+++ b/source/amx/CMakeLists.txt
@@ -1,4 +1,4 @@
-project(pawnamx)
+project(pawnamx C)
 cmake_minimum_required(VERSION 2.8)
 
 # check for optional include files
diff --git a/source/compiler/CMakeLists.txt b/source/compiler/CMakeLists.txt
index ab7d9fe..6db9580 100644
--- a/source/compiler/CMakeLists.txt
+++ b/source/compiler/CMakeLists.txt
@@ -1,4 +1,4 @@
-project(pawnc)
+project(pawnc C)
 cmake_minimum_required(VERSION 2.8)
 
 list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/../../cmake)