diff --git a/cardano-cli/test/cardano-cli-test/Test/Cli/CreateTestnetData.hs b/cardano-cli/test/cardano-cli-test/Test/Cli/CreateTestnetData.hs
index b7cc44f4a..29bb11454 100644
--- a/cardano-cli/test/cardano-cli-test/Test/Cli/CreateTestnetData.hs
+++ b/cardano-cli/test/cardano-cli-test/Test/Cli/CreateTestnetData.hs
@@ -157,3 +157,27 @@ hprop_create_testnet_data_transient_stake_delegators =
 
 -- For the golden part of this test, we are anyway covered by 'hprop_golden_create_testnet_data'
 -- that generates strictly more stuff.
+
+-- Execute this test with:
+-- @cabal test cardano-cli-test --test-options '-p "/create testnet wrong genesis hash/"'@
+hprop_create_testnet_wrong_genesis_hash :: Property
+hprop_create_testnet_wrong_genesis_hash =
+  propertyOnce $ moduleWorkspace "tmp" $ \tempDir -> do
+    let outputDir = tempDir </> "out"
+
+    (exitCode, _stdout, stderr) <-
+      H.noteShowM $
+        execDetailCardanoCLI
+          [ "conway"
+          , "genesis"
+          , "create-testnet-data"
+          , "--testnet-magic"
+          , "42"
+          , "--node-configuration"
+          , "test/cardano-cli-test/files/input/conway/create-testnet-data/./node-config.json"
+          , "--out-dir"
+          , outputDir
+          ]
+
+    exitCode === ExitFailure 1
+    H.assertWith stderr ("Hash associated to key \"ConwayGenesisHash\" in file" `isInfixOf`)
diff --git a/cardano-cli/test/cardano-cli-test/files/input/conway/create-testnet-data/node-config.json b/cardano-cli/test/cardano-cli-test/files/input/conway/create-testnet-data/node-config.json
new file mode 100644
index 000000000..dcfcd85f7
--- /dev/null
+++ b/cardano-cli/test/cardano-cli-test/files/input/conway/create-testnet-data/node-config.json
@@ -0,0 +1,92 @@
+{
+  "AlonzoGenesisHash": "dbc03856c313ce69b7bbcaebcc775347cc8434b0333f67f0b744a359fab16eae",
+  "ByronGenesisHash": "3b580098c978f3f8654768e963ccabf1d6575480bd7ae18b6891d16f5ceeacea",
+  "ConwayGenesisHash": "b632b8469ea7d7ae8a66e5d1419f2992764eb6f1527c39aeaef2525f3d3fa5a9",
+  "EnableLogMetrics": false,
+  "EnableLogging": true,
+  "EnableP2P": false,
+  "ExperimentalHardForksEnabled": true,
+  "ExperimentalProtocolsEnabled": true,
+  "LastKnownBlockVersion-Alt": 0,
+  "LastKnownBlockVersion-Major": 2,
+  "LastKnownBlockVersion-Minor": 0,
+  "MaxConcurrencyBulkSync": 1,
+  "MaxConcurrencyDeadline": 2,
+  "PBftSignatureThreshold": 0.6,
+  "Protocol": "Cardano",
+  "RequiresNetworkMagic": "RequiresMagic",
+  "ShelleyGenesisHash": "00e8783a023250284b547e6d27c081c044424b56350bc5c83d95dc368efe7805",
+  "SocketPath": "db/node.socket",
+  "TestShelleyHardForkAtEpoch": 0,
+  "TraceBlockFetchClient": false,
+  "TraceBlockFetchDecisions": false,
+  "TraceBlockFetchProtocol": false,
+  "TraceBlockFetchProtocolSerialised": false,
+  "TraceBlockFetchServer": false,
+  "TraceBlockchainTime": true,
+  "TraceChainDb": true,
+  "TraceChainSyncBlockServer": false,
+  "TraceChainSyncClient": false,
+  "TraceChainSyncHeaderServer": false,
+  "TraceChainSyncProtocol": false,
+  "TraceConnectionManager": true,
+  "TraceDnsResolver": true,
+  "TraceDnsSubscription": true,
+  "TraceErrorPolicy": true,
+  "TraceForge": true,
+  "TraceHandshake": false,
+  "TraceIpSubscription": true,
+  "TraceLocalChainSyncProtocol": false,
+  "TraceLocalConnectionManager": false,
+  "TraceLocalErrorPolicy": true,
+  "TraceLocalHandshake": false,
+  "TraceLocalRootPeers": true,
+  "TraceLocalServer": false,
+  "TraceLocalTxSubmissionProtocol": false,
+  "TraceLocalTxSubmissionServer": false,
+  "TraceMempool": true,
+  "TraceMux": false,
+  "TracePeerSelection": true,
+  "TracePeerSelectionActions": true,
+  "TracePublicRootPeers": true,
+  "TraceServer": true,
+  "TraceTxInbound": false,
+  "TraceTxOutbound": false,
+  "TraceTxSubmissionProtocol": false,
+  "TurnOnLogMetrics": false,
+  "defaultBackends": [
+    "KatipBK"
+  ],
+  "defaultScribes": [
+    [
+      "FileSK",
+      "logs/mainnet.log"
+    ],
+    [
+      "StdoutSK",
+      "stdout"
+    ]
+  ],
+  "minSeverity": "Debug",
+  "options": {},
+  "rotation": {
+    "rpKeepFilesNum": 3,
+    "rpLogLimitBytes": 5000000,
+    "rpMaxAgeHours": 24
+  },
+  "setupBackends": [
+    "KatipBK"
+  ],
+  "setupScribes": [
+    {
+      "scFormat": "ScJson",
+      "scKind": "FileSK",
+      "scName": "logs/node.log"
+    },
+    {
+      "scFormat": "ScJson",
+      "scKind": "StdoutSK",
+      "scName": "stdout"
+    }
+  ]
+}