diff --git a/Makefile b/Makefile
index 48f408b..3357de7 100644
--- a/Makefile
+++ b/Makefile
@@ -28,7 +28,7 @@
 DOCKER_LABEL_COMMIT_DATE ?= $(shell git diff-index --quiet HEAD -- && git show -s --format=%cd --date=iso-strict HEAD || echo "unknown" )
 DOCKER_LABEL_BUILD_DATE  ?= $(shell date -u "+%Y-%m-%dT%H:%M:%SZ")
 
-bbsim: dep protos/openolt.pb.go bbsimapi
+bbsim: dep bbsimapi
 	GO111MODULE=on go build -i -v -o $@
 
 dep:
@@ -37,13 +37,6 @@
 	GO111MODULE=off go get -v github.com/google/gopacket
 	GO111MODULE=on go mod download all
 
-protos/openolt.pb.go: openolt.proto
-	@protoc -I . \
-	-I${GOPATH}/src \
-	-I${GOPATH}/src/github.com/grpc-ecosystem/grpc-gateway/third_party/googleapis \
-	--go_out=plugins=grpc:protos/ \
-	$<
-
 bbsimapi: api/bbsim.proto
 	@protoc -I ./api \
 	-I${GOPATH}/src \
@@ -61,7 +54,7 @@
 	--swagger_out=logtostderr=true,allow_delete_body=true:api/swagger/ \
 	bbsim.proto
 
-test: dep protos/openolt.pb.go bbsimapi
+test: dep bbsimapi
 	GO111MODULE=on go test -v ./...
 	GO111MODULE=on go test -v ./... -cover