diff --git a/rpc/src/main/scala/org/bitcoins/rpc/jsonmodels/RawTransactionResult.scala b/rpc/src/main/scala/org/bitcoins/rpc/jsonmodels/RawTransactionResult.scala
index b5540cac20..014274dc4f 100644
--- a/rpc/src/main/scala/org/bitcoins/rpc/jsonmodels/RawTransactionResult.scala
+++ b/rpc/src/main/scala/org/bitcoins/rpc/jsonmodels/RawTransactionResult.scala
@@ -87,6 +87,6 @@ case class SignRawTransactionError(
     txid: DoubleSha256Digest,
     vout: Int,
     scriptSig: ScriptPubKey,
-    sequence: Int,
+    sequence: UInt32,
     error: String
 ) extends RawTransactionResult
diff --git a/rpc/src/main/scala/org/bitcoins/rpc/jsonmodels/WalletResult.scala b/rpc/src/main/scala/org/bitcoins/rpc/jsonmodels/WalletResult.scala
index 0817526a52..be26332169 100644
--- a/rpc/src/main/scala/org/bitcoins/rpc/jsonmodels/WalletResult.scala
+++ b/rpc/src/main/scala/org/bitcoins/rpc/jsonmodels/WalletResult.scala
@@ -24,7 +24,7 @@ case class BumpFeeResult(
     txid: DoubleSha256Digest,
     origfee: Bitcoins,
     fee: Bitcoins, // Should be BitcoinFeeUnit
-    warnings: String)
+    errors: Vector[String])
     extends WalletResult
 
 case class GetTransactionResult(
diff --git a/rpc/src/main/scala/org/bitcoins/rpc/serializers/JsonWriters.scala b/rpc/src/main/scala/org/bitcoins/rpc/serializers/JsonWriters.scala
index 3abe377398..1371bf1795 100644
--- a/rpc/src/main/scala/org/bitcoins/rpc/serializers/JsonWriters.scala
+++ b/rpc/src/main/scala/org/bitcoins/rpc/serializers/JsonWriters.scala
@@ -6,6 +6,7 @@ import org.bitcoins.core.number.UInt32
 import org.bitcoins.core.protocol.BitcoinAddress
 import org.bitcoins.core.protocol.script.ScriptPubKey
 import org.bitcoins.core.protocol.transaction.{Transaction, TransactionInput}
+import org.bitcoins.core.util.BitcoinSUtil
 import play.api.libs.json._
 
 object JsonWriters {
@@ -22,7 +23,7 @@ object JsonWriters {
   }
 
   implicit object ScriptPubKeyWrites extends Writes[ScriptPubKey] {
-    override def writes(o: ScriptPubKey): JsValue = JsString(o.hex)
+    override def writes(o: ScriptPubKey): JsValue = JsString(BitcoinSUtil.encodeHex(o.asmBytes))
   }
 
   implicit object TransactionInputWrites extends Writes[TransactionInput] {