1 files changed, 2 insertions, 2 deletions
diff --git a/src/script/sigcache.cpp b/src/script/sigcache.cpp
index c1786140de..2bfe206597 100644
--- a/src/script/sigcache.cpp
+++ b/src/script/sigcache.cpp
@@ -1,5 +1,5 @@
 // Copyright (c) 2009-2010 Satoshi Nakamoto
-// Copyright (c) 2009-2019 The Bitcoin Core developers
+// Copyright (c) 2009-2020 The Bitcoin Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
@@ -66,7 +66,7 @@ public:
         return setValid.contains(entry, erase);
     }
 
-    void Set(uint256& entry)
+    void Set(const uint256& entry)
     {
         boost::unique_lock<boost::shared_mutex> lock(cs_sigcache);
         setValid.insert(entry);