diff --git a/Source/Core/DiscIO/Src/NANDContentLoader.h b/Source/Core/DiscIO/Src/NANDContentLoader.h
index 487ed5db83..1d9accb7d7 100644
--- a/Source/Core/DiscIO/Src/NANDContentLoader.h
+++ b/Source/Core/DiscIO/Src/NANDContentLoader.h
@@ -18,6 +18,7 @@
 #ifndef _NAND_CONTENT_LOADER_H
 #define _NAND_CONTENT_LOADER_H
 
+#include <string>
 #include <vector>
 #include "Common.h"
 #include "Blob.h"