diff --git a/src/internet/test/tcp-slow-start-test.h b/src/internet/test/tcp-slow-start-test.h
index a49db5dcd..f4fc39c88 100644
--- a/src/internet/test/tcp-slow-start-test.h
+++ b/src/internet/test/tcp-slow-start-test.h
@@ -64,7 +64,6 @@ protected:
 private:
   uint32_t m_segmentSize;
   uint32_t m_packetSize;
-  uint32_t initialSsTh;
   uint32_t m_packets;
 };