diff --git a/.travis.yml b/.travis.yml
index 31c1a96..3523be9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,4 +10,4 @@ install:
     - git clone https://github.com/google/snappy
     - ( cd snappy && sh ./autogen.sh && ./configure && make -j2 && sudo make install )
     - sudo apt-get install zlib1g-dev
-script: make proto && make -j4 && make install
+script: make -j4 && make install
diff --git a/Makefile b/Makefile
index 0ddc42b..5d66f19 100644
--- a/Makefile
+++ b/Makefile
@@ -35,12 +35,13 @@ INC=src/sofa/pbrpc/pbrpc.h src/sofa/pbrpc/closure_helper.h src/sofa/pbrpc/closur
 	src/sofa/pbrpc/builtin_service.proto src/sofa/pbrpc/builtin_service.pb.h
 
 LIB=libsofa-pbrpc.a
-LIB_SRC=$(wildcard src/sofa/pbrpc/*.cc)
-LIB_OBJ=$(patsubst %.cc,%.o,$(LIB_SRC))
 PROTO_FILE=$(wildcard src/sofa/pbrpc/*.proto)
 PROTO_SRC=$(PROTO_FILE:.proto=.pb.cc)
 PROTO_HEADER=$(PROTO_FILE:.proto=.pb.h)
 
+LIB_SRC=$(wildcard src/sofa/pbrpc/*.cc) $(PROTO_SRC)
+LIB_OBJ=$(patsubst %.cc,%.o,$(LIB_SRC))
+
 BIN=sofa-pbrpc-client
 BIN_SRC=$(wildcard src/sofa/pbrpc/http-agent/*.cc)
 BIN_OBJ=$(patsubst %.cc,%.o,$(BIN_SRC))
@@ -84,7 +85,9 @@ check_depends:
 clean:
 	rm -f $(LIB) $(LIB_OBJ) $(BIN) $(BIN_OBJ) $(PROTO_HEADER) $(PROTO_SRC)
 
-proto:
+proto: $(PROTO_SRC) $(PROTO_HEADER)
+
+last:
 	cd src && sh compile_proto.sh ${PROTOBUF_DIR}/include
 
 rebuild: clean all
@@ -98,6 +101,11 @@ $(BIN): $(LIB) $(BIN_OBJ)
 %.o: %.cpp
 	$(CXX) $(CXXFLAGS) -c$< -o $@
 
+%.pb.cc %.pb.h: %.proto
+	$(PROTOC) --proto_path=${PROTOBUF_DIR}/include --proto_path=/usr/local/include \
+		  --proto_path=./src/sofa/pbrpc \
+		  --cpp_out=./src/proto $<j
+
 build: $(LIB) $(BIN)
 	@echo
 	@echo 'Build succeed, run "make install" to install sofa-pbrpc.'