diff --git a/node/src/main/kotlin/net/corda/node/internal/NetworkParametersReader.kt b/node/src/main/kotlin/net/corda/node/internal/NetworkParametersReader.kt
index b6df8efa29..0bab5cb88e 100644
--- a/node/src/main/kotlin/net/corda/node/internal/NetworkParametersReader.kt
+++ b/node/src/main/kotlin/net/corda/node/internal/NetworkParametersReader.kt
@@ -29,8 +29,8 @@ class NetworkParametersReader(private val trustRoot: X509Certificate,
                         "parameters advertised by network map. Please update node to use correct network parameters file."
         )
         class OldParams(previousParametersHash: SecureHash, advertisedParametersHash: SecureHash) : Error(
-                "Node uses parameters with hash: $previousParametersHash but network map is advertising: " +
-                        "$advertisedParametersHash. Please update node to use correct network parameters file."
+                """Node is using network parameters with hash $previousParametersHash but the network map is advertising $advertisedParametersHash.
+                To resolve this mismatch, and move to the current parameters, delete the $NETWORK_PARAMS_FILE_NAME file from the node's directory and restart."""
         )
     }