diff --git a/src/wallet/rpcdump.cpp b/src/wallet/rpcdump.cpp
index 865f9b75..35c372b9 100644
--- a/src/wallet/rpcdump.cpp
+++ b/src/wallet/rpcdump.cpp
@@ -565,12 +565,12 @@ Value z_importkey(const Array& params, bool fHelp)
     auto addr = key.address();
 
     {
-        pwalletMain->MarkDirty();
-
         // Don't throw error in case a key is already there
         if (pwalletMain->HaveSpendingKey(addr))
             return Value::null;
 
+        pwalletMain->MarkDirty();
+
         if (!pwalletMain-> AddZKey(key))
             throw JSONRPCError(RPC_WALLET_ERROR, "Error adding spending key to wallet");
 
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index d2878a40..0f6eeff4 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -80,7 +80,7 @@ CZCPaymentAddress CWallet::GenerateNewZKey()
 
     // Check for collision, even though it is unlikely to ever occur
     if (CCryptoKeyStore::HaveSpendingKey(addr))
-        throw std::runtime_error("CWallet::GenerateNewSpendingKey(): Collision detected");
+        throw std::runtime_error("CWallet::GenerateNewZKey(): Collision detected");
 
     // Create new metadata
     int64_t nCreationTime = GetTime();
@@ -88,7 +88,7 @@ CZCPaymentAddress CWallet::GenerateNewZKey()
 
     CZCPaymentAddress pubaddr(addr);
     if (!AddZKey(k))
-        throw std::runtime_error("CWallet::GenerateNewSpendingKey(): AddZKey failed");
+        throw std::runtime_error("CWallet::GenerateNewZKey(): AddZKey failed");
     return pubaddr;
 }