diff --git a/Minecraft.World/IO/Files/ConsoleSaveFileSplit.h b/Minecraft.World/IO/Files/ConsoleSaveFileSplit.h
index a05535d6c..afb9eecad 100644
--- a/Minecraft.World/IO/Files/ConsoleSaveFileSplit.h
+++ b/Minecraft.World/IO/Files/ConsoleSaveFileSplit.h
@@ -28,7 +28,7 @@ private:
 	public:
 		int64_t			lastWritten;
 		unsigned int	fileRef;
-		bool			operator<(const DirtyRegionFile& rhs) { return lastWritten < rhs.lastWritten; }
+		bool			operator<(const DirtyRegionFile& rhs) const { return lastWritten < rhs.lastWritten; }
 	};
 
 	class RegionFileReference
@@ -140,4 +140,4 @@ public:
 
 	virtual void ConvertRegionFile(File sourceFile);
 	virtual void ConvertToLocalPlatform();
-};
\ No newline at end of file
+};