1 files changed, 1 insertions, 0 deletions
diff --git a/main.cpp b/main.cpp
index 5e06f6b..28ea0c1 100644
--- a/main.cpp
+++ b/main.cpp
@@ -21,6 +21,7 @@ using namespace tinyxml2;
 #include <gametime.hpp>
 
 #include <fstream>
+#include <mutex>
 
 /* ----------------------------------------------------------------------------
 ** Variables section