diff --git a/CacheDataHandler.hpp b/CacheDataHandler.hpp
index cea73d2..5b1b295 100644
--- a/CacheDataHandler.hpp
+++ b/CacheDataHandler.hpp
@@ -48,7 +48,7 @@
 
     void Register(const HidlToken token, const size_t hashValue, const size_t cacheSize);
 
-    bool Validate(const HidlToken token, const size_t hashValue) const;
+    bool Validate(const HidlToken token, const size_t hashValue, const size_t cacheSize) const;
 
     size_t Hash(std::vector<uint8_t>& cacheData);