diff --git a/src/test/fuzz/coinscache_sim.cpp b/src/test/fuzz/coinscache_sim.cpp
index 9d41a6c058b..15ece2e4af0 100644
--- a/src/test/fuzz/coinscache_sim.cpp
+++ b/src/test/fuzz/coinscache_sim.cpp
@@ -70,7 +70,7 @@ struct PrecomputedData
                 coins[i].out.scriptPubKey[0] = OP_HASH160;
                 coins[i].out.scriptPubKey[1] = 20;
                 std::copy(hash.begin(), hash.begin() + 20, coins[i].out.scriptPubKey.begin() + 2);
-                coins[i].out.scriptPubKey[12] = OP_EQUAL;
+                coins[i].out.scriptPubKey[22] = OP_EQUAL;
                 break;
             case 2: /* P2WPKH */
                 coins[i].out.scriptPubKey.resize(22);
@@ -446,7 +446,7 @@ FUZZ_TARGET(coinscache_sim)
             }
         }
 
-        // HaveCoinInCache ignores spent coins, so GetCacheSize() may exceed it. */
+        // HaveCoinInCache ignores spent coins, so GetCacheSize() may exceed it.
         assert(cache.GetCacheSize() >= cache_size);
     }