diff --git a/ofagent/protos/Makefile b/ofagent/protos/Makefile
index 157052d..2d9c069 100644
--- a/ofagent/protos/Makefile
+++ b/ofagent/protos/Makefile
@@ -33,5 +33,5 @@
 build: copyfiles
 
 copyfiles:
-	rsync -av --include '*/' --include '*.py' --exclude='*' $(SOURCE_PROTO_DIR)/ $(TARGET_PROTO_DIR)
+	rsync -av --include '*/' --exclude='third_party/__init__.py' --include '*.py' --exclude='*' $(SOURCE_PROTO_DIR)/ $(TARGET_PROTO_DIR)