remove protobuf include directory
diff --git a/examples/src/cpp/BUILD b/examples/src/cpp/BUILD
index 463cbcd..c7c3aee 100644
--- a/examples/src/cpp/BUILD
+++ b/examples/src/cpp/BUILD
@@ -12,7 +12,6 @@
       "-Iheron/api/src/cpp",
       "-I$(GENDIR)/heron",
       "-I$(GENDIR)/third_party/glog/include",
-      "-I$(GENDIR)/third_party/protobuf/include",
     ],
     deps = [
         "//heron/api/src/cpp:cxx-api",
@@ -32,7 +31,6 @@
       "-Iheron",
       "-I$(GENDIR)/heron",
       "-I$(GENDIR)/third_party/glog/include",
-      "-I$(GENDIR)/third_party/protobuf/include",
     ],
     deps = [
         "//heron/api/src/cpp:cxx-api",
@@ -52,7 +50,6 @@
       "-Iheron",
       "-I$(GENDIR)/heron",
       "-I$(GENDIR)/third_party/glog/include",
-      "-I$(GENDIR)/third_party/protobuf/include",
     ],
     deps = [
         "//heron/api/src/cpp:cxx-api",