diff --git a/protob/messages.proto b/protob/messages.proto
index 7059274006..21ff2f9a29 100644
--- a/protob/messages.proto
+++ b/protob/messages.proto
@@ -441,19 +441,8 @@ message SimpleSignTx {
  */
 message TxRequest {
 	optional RequestType request_type = 1;		// what should be filled in TxAck message?
-	optional TxRequestDetails details = 2;		// request for tx details
-	optional TxRequestSerialized serialized = 3;	// serialized data and request for next
-}
-
-message TxRequestDetails {
-	optional uint32 request_index = 1;		// device expects TxAck message from the computer
-	optional bytes tx_hash = 2;			// tx_hash of requested transaction
-}
-
-message TxRequestSerialized {
-	optional uint32 signature_index = 1;		// 'signature' field contains signed input of this index
-	optional bytes signature = 2;			// signature of the signature_index input
-	optional bytes serialized_tx = 3;		// part of serialized and signed transaction
+	optional TxRequestDetailsType details = 2;		// request for tx details
+	optional TxRequestSerializedType serialized = 3;	// serialized data and request for next
 }
 
 /**
diff --git a/protob/types.proto b/protob/types.proto
index d05cd0744b..ff6aa20c38 100644
--- a/protob/types.proto
+++ b/protob/types.proto
@@ -159,3 +159,14 @@ message TransactionType {
 	repeated TxOutputType outputs = 5;
 	optional uint32 lock_time = 4;
 }
+
+message TxRequestDetailsType {
+        optional uint32 request_index = 1;              // device expects TxAck message from the computer
+        optional bytes tx_hash = 2;                     // tx_hash of requested transaction
+}
+
+message TxRequestSerializedType {
+        optional uint32 signature_index = 1;            // 'signature' field contains signed input of this index
+        optional bytes signature = 2;                   // signature of the signature_index input
+        optional bytes serialized_tx = 3;               // part of serialized and signed transaction
+}