diff --git a/Source/Core/Common/LinearDiskCache.h b/Source/Core/Common/LinearDiskCache.h
index ce9312b0e4..20c689de13 100644
--- a/Source/Core/Common/LinearDiskCache.h
+++ b/Source/Core/Common/LinearDiskCache.h
@@ -7,6 +7,7 @@
 #include <fstream>
 
 #include "Common/Common.h"
+#include "Common/FileUtil.h"
 
 // On disk format:
 //header{