diff --git a/src/main.cpp b/src/main.cpp
index 287251d..000aad8 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,4 +1,5 @@
 #include "gamecube.h"
+#include "gamematrix.h"
 #include <algorithm>
 #include <ctime>