diff --git a/Makefile b/Makefile
index ee820edd..6580ad6a 100755
--- a/Makefile
+++ b/Makefile
@@ -419,7 +419,7 @@ proto-all: proto-format proto-lint proto-gen
 
 proto-gen:
 	@echo "Generating Protobuf files"
-	@if docker ps -a --format '{{.Names}}' | grep -Eq "^${containerProtoGen}$$"; then docker start -a $(containerProtoGen); else docker run --name $(containerProtoGen) -v $(CURDIR):/workspace --workdir /workspace $(protoImageName) \
+	@if docker ps -a --format '{{.Names}}' | grep -Eq "^${containerProtoGen}$$"; then docker start -a $(containerProtoGen); else docker run --name $(containerProtoGen) -v $(CURDIR):/workspace --workdir /workspace $(containerProtoImage) \
 		sh ./scripts/protocgen.sh; fi
 
 proto-swagger-gen:
diff --git a/proto/ethermint/evm/v1/tx.proto b/proto/ethermint/evm/v1/tx.proto
index a6f0af9a..d9bb7961 100644
--- a/proto/ethermint/evm/v1/tx.proto
+++ b/proto/ethermint/evm/v1/tx.proto
@@ -2,6 +2,7 @@ syntax = "proto3";
 package ethermint.evm.v1;
 
 import "gogoproto/gogo.proto";
+import "google/api/annotations.proto";
 import "google/protobuf/any.proto";
 import "cosmos_proto/cosmos.proto";
 import "ethermint/evm/v1/evm.proto";
@@ -11,7 +12,9 @@ option go_package = "github.com/tharsis/ethermint/x/evm/types";
 // Msg defines the evm Msg service.
 service Msg {
   // EthereumTx defines a method submitting Ethereum transactions.
-  rpc EthereumTx(MsgEthereumTx) returns (MsgEthereumTxResponse);
+  rpc EthereumTx(MsgEthereumTx) returns (MsgEthereumTxResponse) {
+    option (google.api.http).get = "/ethermint/evm/v1/ethereum_tx";
+  };
 }
 
 // MsgEthereumTx encapsulates an Ethereum transaction as an SDK message.