diff --git a/firmware/Makefile b/firmware/Makefile
index 36fc371b9..6d134cd24 100644
--- a/firmware/Makefile
+++ b/firmware/Makefile
@@ -59,3 +59,4 @@ CFLAGS += -DDEBUG_LOG=0
 CFLAGS += -DSCM_REVISION='"$(shell git rev-parse HEAD | sed 's:\(..\):\\x\1:g')"'
 CFLAGS += -DED25519_CUSTOMRANDOM=1
 CFLAGS += -DED25519_CUSTOMHASH=1
+CFLAGS += -DUSE_ETHEREUM=1
diff --git a/firmware/fsm.c b/firmware/fsm.c
index ea7b1c314..f5ee14ade 100644
--- a/firmware/fsm.c
+++ b/firmware/fsm.c
@@ -419,6 +419,19 @@ void fsm_msgSignTx(SignTx *msg)
 	signing_init(msg->inputs_count, msg->outputs_count, coin, node, msg->version, msg->lock_time);
 }
 
+
+void fsm_msgEthereumSignTx(EthereumSignTx *msg)
+{
+	(void)msg;
+	fsm_sendFailure(FailureType_Failure_Other, "Unsupported feature");
+}
+
+void fsm_msgEthereumTxAck(EthereumTxAck *msg)
+{
+	(void)msg;
+	fsm_sendFailure(FailureType_Failure_Other, "Unsupported feature");
+}
+
 void fsm_msgCancel(Cancel *msg)
 {
 	(void)msg;
@@ -628,6 +641,12 @@ void fsm_msgGetAddress(GetAddress *msg)
 	layoutHome();
 }
 
+void fsm_msgEthereumGetAddress(EthereumGetAddress *msg)
+{
+	(void)msg;
+	fsm_sendFailure(FailureType_Failure_Other, "Unsupported feature");
+}
+
 void fsm_msgEntropyAck(EntropyAck *msg)
 {
 	if (msg->has_entropy) {
diff --git a/firmware/fsm.h b/firmware/fsm.h
index b361ad79d..085c23638 100644
--- a/firmware/fsm.h
+++ b/firmware/fsm.h
@@ -59,6 +59,9 @@ void fsm_msgEstimateTxSize(EstimateTxSize *msg);
 void fsm_msgRecoveryDevice(RecoveryDevice *msg);
 void fsm_msgWordAck(WordAck *msg);
 void fsm_msgSetU2FCounter(SetU2FCounter *msg);
+void fsm_msgEthereumGetAddress(EthereumGetAddress *msg);
+void fsm_msgEthereumSignTx(EthereumSignTx *msg);
+void fsm_msgEthereumTxAck(EthereumTxAck *msg);
 
 // debug message functions
 #if DEBUG_LINK
diff --git a/firmware/messages.c b/firmware/messages.c
index ee323b82e..9981bc2b1 100644
--- a/firmware/messages.c
+++ b/firmware/messages.c
@@ -73,6 +73,9 @@ static const struct MessagesMap_t MessagesMap[] = {
 	{'n', 'i', MessageType_MessageType_RecoveryDevice,		RecoveryDevice_fields,		(void (*)(void *))fsm_msgRecoveryDevice},
 	{'n', 'i', MessageType_MessageType_WordAck,				WordAck_fields,				(void (*)(void *))fsm_msgWordAck},
 	{'n', 'i', MessageType_MessageType_SetU2FCounter,		SetU2FCounter_fields,		(void (*)(void *))fsm_msgSetU2FCounter},
+	{'n', 'i', MessageType_MessageType_EthereumGetAddress,		EthereumGetAddress_fields,	(void (*)(void *))fsm_msgEthereumGetAddress},
+	{'n', 'i', MessageType_MessageType_EthereumSignTx,		EthereumSignTx_fields,		(void (*)(void *))fsm_msgEthereumSignTx},
+	{'n', 'i', MessageType_MessageType_EthereumTxAck,		EthereumTxAck_fields,		(void (*)(void *))fsm_msgEthereumTxAck},
 	// out messages
 	{'n', 'o', MessageType_MessageType_Success,				Success_fields,				0},
 	{'n', 'o', MessageType_MessageType_Failure,				Failure_fields,				0},
@@ -95,6 +98,8 @@ static const struct MessagesMap_t MessagesMap[] = {
 	{'n', 'o', MessageType_MessageType_PassphraseRequest,	PassphraseRequest_fields,	0},
 	{'n', 'o', MessageType_MessageType_TxSize,				TxSize_fields,				0},
 	{'n', 'o', MessageType_MessageType_WordRequest,			WordRequest_fields,			0},
+	{'n', 'o', MessageType_MessageType_EthereumAddress,		EthereumAddress_fields,		0},
+	{'n', 'o', MessageType_MessageType_EthereumTxRequest,		EthereumTxRequest_fields,		0},
 #if DEBUG_LINK
 	// debug in messages
 //	{'d', 'i', MessageType_MessageType_DebugLinkDecision,	DebugLinkDecision_fields,	(void (*)(void *))fsm_msgDebugLinkDecision},