diff --git a/src/wallet/test/wallet_crypto_tests.cpp b/src/wallet/test/wallet_crypto_tests.cpp
--- a/src/wallet/test/wallet_crypto_tests.cpp
+++ b/src/wallet/test/wallet_crypto_tests.cpp
@@ -30,8 +30,8 @@
                            nRounds, chKey, chIV);
 
     if (i != (int)WALLET_CRYPTO_KEY_SIZE) {
-        memory_cleanse(chKey, sizeof(chKey));
-        memory_cleanse(chIV, sizeof(chIV));
+        memory_cleanse(chKey, WALLET_CRYPTO_KEY_SIZE);
+        memory_cleanse(chIV, WALLET_CRYPTO_IV_SIZE);
         return false;
     }
     return true;