diff --git a/lib/cpp/src/Thrift.cpp b/lib/cpp/src/Thrift.cpp
index 0f3ad88..186c5af 100644
--- a/lib/cpp/src/Thrift.cpp
+++ b/lib/cpp/src/Thrift.cpp
@@ -9,6 +9,8 @@
 
 namespace facebook { namespace thrift {
 
+TOutput GlobalOutput;
+
 uint32_t TApplicationException::read(facebook::thrift::protocol::TProtocol* iprot) {
   uint32_t xfer = 0;
   std::string fname;