diff --git a/config.go b/config.go
index 6130410e6..0398c4b27 100644
--- a/config.go
+++ b/config.go
@@ -1231,6 +1231,15 @@ func ValidateConfig(cfg Config, interceptor signal.Interceptor, fileParser,
 		if cfg.Bitcoin.SimNet {
 			numNets++
 			cfg.ActiveNetParams = chainreg.BitcoinSimNetParams
+
+			// For simnet, the btcsuite chain params uses a
+			// cointype of 115. However, we override this in
+			// chainreg/chainparams.go, but the raw ChainParam
+			// field is used elsewhere. To ensure everything is
+			// consistent, we'll also override the cointype within
+			// the raw params.
+			targetCoinType := chainreg.BitcoinSigNetParams.CoinType
+			cfg.ActiveNetParams.Params.HDCoinType = targetCoinType
 		}
 		if cfg.Bitcoin.SigNet {
 			numNets++