diff --git a/tools/build_protobuf b/tools/build_protobuf
old mode 100644
new mode 100755
index 1a0a79f4cf..04ddc9824b
--- a/tools/build_protobuf
+++ b/tools/build_protobuf
@@ -21,7 +21,7 @@ mkdir -p "$PB2_OUT"
 
 for file in $PROTO_FILES; do
     # Compile .proto files to python2 modules using google protobuf library
-    protoc --python_out="$PB2_OUT" -I"$PROTO_PATH" "$file.proto"
+    protoc --python_out="$PB2_OUT" -I/usr/include -I"$PROTO_PATH" "$PROTO_PATH/$file.proto"
 done
 
 for file in $PROTO_FILES; do