diff --git a/CMakeLists.txt b/CMakeLists.txt
index ed2c331..4dade61 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -135,6 +135,7 @@ set(MAIN_HEADERS
 	src/al-util.h
 	src/boost-hash.h
 	src/debugwriter.h
+	src/defines.hpp
 )
 
 set(MAIN_SOURCE
diff --git a/src/filesystem.cpp b/src/filesystem.cpp
index 7de9138..e6706ef 100644
--- a/src/filesystem.cpp
+++ b/src/filesystem.cpp
@@ -23,6 +23,7 @@
 
 #include "font.h"
 #include "util.h"
+#include "defines.hpp"
 #include "exception.h"
 #include "boost-hash.h"
 #include "debugwriter.h"