diff --git a/CMakeLists.txt b/CMakeLists.txt
index fbe9b08..7a33740 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -18,6 +18,7 @@ endif()
 set(SRC_FILES
         ${CMAKE_CURRENT_LIST_DIR}/src/main.cpp
         ${CMAKE_CURRENT_LIST_DIR}/src/gamecube.cpp
+        src/gamematrix.cpp
 )
 
 ##Tom: prev: ${CMAKE_CURRENT_LIST_DIR}/linux -> now /include