diff --git a/src/mem/cache/prefetch/bop.hh b/src/mem/cache/prefetch/bop.hh
index e8fd770..637ed21 100644
--- a/src/mem/cache/prefetch/bop.hh
+++ b/src/mem/cache/prefetch/bop.hh
@@ -151,7 +151,7 @@
         ~BOPPrefetcher() {}
 
         void calculatePrefetch(const PrefetchInfo &pfi,
-                               std::vector<AddrPriority> &addresses);
+                               std::vector<AddrPriority> &addresses) override;
 };
 
 #endif /* __MEM_CACHE_PREFETCH_BOP_HH__ */