diff --git a/src/rpc/blockchain.cpp b/src/rpc/blockchain.cpp
--- a/src/rpc/blockchain.cpp
+++ b/src/rpc/blockchain.cpp
@@ -1110,8 +1110,7 @@
     if (fMempool) {
         LOCK(mempool.cs);
         CCoinsViewMemPool view(pcoinsTip.get(), mempool);
-        if (!view.GetCoin(out, coin) || mempool.isSpent(out)) {
-            // TODO: this should be done by the CCoinsViewMemPool
+        if (!view.HasUnspentCoin(out, coin)) {
             return NullUniValue;
         }
     } else {
diff --git a/src/txmempool.h b/src/txmempool.h
--- a/src/txmempool.h
+++ b/src/txmempool.h
@@ -823,6 +823,7 @@
     CCoinsViewMemPool(CCoinsView *baseIn, const CTxMemPool &mempoolIn);
     bool GetCoin(const COutPoint &outpoint, Coin &coin) const override;
     bool HaveCoin(const COutPoint &outpoint) const override;
+    bool HasUnspentCoin(const COutPoint &outpoint, Coin &coin) const;
 };
 
 // We want to sort transactions by coin age priority
diff --git a/src/txmempool.cpp b/src/txmempool.cpp
--- a/src/txmempool.cpp
+++ b/src/txmempool.cpp
@@ -1099,6 +1099,10 @@
     return mempool.exists(outpoint) || base->HaveCoin(outpoint);
 }
 
+bool CCoinsViewMemPool::HasUnspentCoin(const COutPoint &outpoint, Coin &coin) const {
+    return GetCoin(outpoint, coin) && !mempool.isSpent(outpoint);
+}
+
 size_t CTxMemPool::DynamicMemoryUsage() const {
     LOCK(cs);
     // Estimate the overhead of mapTx to be 15 pointers + an allocation, as no