diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h
index cc0197f14..3d721fc40 100644
--- a/src/wallet/wallet.h
+++ b/src/wallet/wallet.h
@@ -959,6 +959,7 @@ public:
     CAmount GetCredit(const CTransaction& tx, const isminefilter& filter) const;
     CAmount GetChange(const CTransaction& tx) const;
     void ChainTip(const CBlockIndex *pindex, const CBlock *pblock, ZCIncrementalMerkleTree tree, bool added);
+    /** Saves witness caches and best block locator to disk. */
     void SetBestChain(const CBlockLocator& loc);
 
     DBErrors LoadWallet(bool& fFirstRunRet);