diff --git a/qa/zcash/performance-measurements.sh b/qa/zcash/performance-measurements.sh
index b65974078..851adef09 100755
--- a/qa/zcash/performance-measurements.sh
+++ b/qa/zcash/performance-measurements.sh
@@ -56,7 +56,7 @@ function zcashd_valgrind_stop {
 case "$1" in
     *)
         case "$2" in
-            verifyjoinsplit|trydecryptnotes)
+            verifyjoinsplit)
                 zcashd_start
                 RAWJOINSPLIT=$(zcash_rpc zcsamplejoinsplit)
                 zcashd_stop
@@ -89,7 +89,7 @@ case "$1" in
                 zcash_rpc zcbenchmark validatelargetx 5
                 ;;
             trydecryptnotes)
-                zcash_rpc zcbenchmark trydecryptnotes 1000 "\"$RAWJOINSPLIT\""
+                zcash_rpc zcbenchmark trydecryptnotes 1000 "${@:3}"
                 ;;
             incnotewitnesses)
                 zcash_rpc zcbenchmark incnotewitnesses 100 "${@:3}"
@@ -123,7 +123,7 @@ case "$1" in
                 zcash_rpc zcbenchmark verifyequihash 1
                 ;;
             trydecryptnotes)
-                zcash_rpc zcbenchmark trydecryptnotes 1 "\"$RAWJOINSPLIT\""
+                zcash_rpc zcbenchmark trydecryptnotes 1 "${@:3}"
                 ;;
             incnotewitnesses)
                 zcash_rpc zcbenchmark incnotewitnesses 1 "${@:3}"
@@ -158,7 +158,7 @@ case "$1" in
                 zcash_rpc zcbenchmark verifyequihash 1
                 ;;
             trydecryptnotes)
-                zcash_rpc zcbenchmark trydecryptnotes 1 "\"$RAWJOINSPLIT\""
+                zcash_rpc zcbenchmark trydecryptnotes 1 "${@:3}"
                 ;;
             incnotewitnesses)
                 zcash_rpc zcbenchmark incnotewitnesses 1 "${@:3}"
diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp
index 6c1ce2d11..abd8a362e 100644
--- a/src/wallet/rpcwallet.cpp
+++ b/src/wallet/rpcwallet.cpp
@@ -2454,8 +2454,7 @@ Value zc_benchmark(const json_spirit::Array& params, bool fHelp)
 
     JSDescription samplejoinsplit;
 
-    if (benchmarktype == "verifyjoinsplit" ||
-            benchmarktype == "trydecryptnotes") {
+    if (benchmarktype == "verifyjoinsplit") {
         CDataStream ss(ParseHexV(params[2].get_str(), "js"), SER_NETWORK, PROTOCOL_VERSION);
         ss >> samplejoinsplit;
     }
@@ -2482,7 +2481,8 @@ Value zc_benchmark(const json_spirit::Array& params, bool fHelp)
         } else if (benchmarktype == "validatelargetx") {
             sample_times.push_back(benchmark_large_tx());
         } else if (benchmarktype == "trydecryptnotes") {
-            sample_times.push_back(benchmark_try_decrypt_notes(samplejoinsplit));
+            int nAddrs = params[2].get_int();
+            sample_times.push_back(benchmark_try_decrypt_notes(nAddrs));
         } else if (benchmarktype == "incnotewitnesses") {
             int nTxs = params[2].get_int();
             sample_times.push_back(benchmark_increment_note_witnesses(nTxs));
diff --git a/src/zcbenchmarks.cpp b/src/zcbenchmarks.cpp
index 61afb535d..8f324850b 100644
--- a/src/zcbenchmarks.cpp
+++ b/src/zcbenchmarks.cpp
@@ -224,19 +224,16 @@ double benchmark_large_tx()
     return timer_stop(tv_start);
 }
 
-double benchmark_try_decrypt_notes(const JSDescription &joinsplit)
+double benchmark_try_decrypt_notes(size_t nAddrs)
 {
-    const size_t NUM_ADDRS = 10;
-
     CWallet wallet;
-    for (int i = 0; i < NUM_ADDRS; i++) {
+    for (int i = 0; i < nAddrs; i++) {
         auto sk = libzcash::SpendingKey::random();
         wallet.AddSpendingKey(sk);
     }
 
-    CMutableTransaction mtx;
-    mtx.vjoinsplit.push_back(joinsplit);
-    CTransaction tx(mtx);
+    auto sk = libzcash::SpendingKey::random();
+    auto tx = GetValidReceive(*pzcashParams, sk, 10, true);
 
     struct timeval tv_start;
     timer_start(tv_start);
diff --git a/src/zcbenchmarks.h b/src/zcbenchmarks.h
index a1575e500..318921002 100644
--- a/src/zcbenchmarks.h
+++ b/src/zcbenchmarks.h
@@ -12,7 +12,7 @@ extern std::vector<double> benchmark_solve_equihash_threaded(int nThreads);
 extern double benchmark_verify_joinsplit(const JSDescription &joinsplit);
 extern double benchmark_verify_equihash();
 extern double benchmark_large_tx();
-extern double benchmark_try_decrypt_notes(const JSDescription &joinsplit);
+extern double benchmark_try_decrypt_notes(size_t nAddrs);
 extern double benchmark_increment_note_witnesses(size_t nTxs);
 
 #endif