diff --git a/src/net/grunt/ClientLink.cpp b/src/net/grunt/ClientLink.cpp
index ad548ad..f6a06b2 100644
--- a/src/net/grunt/ClientLink.cpp
+++ b/src/net/grunt/ClientLink.cpp
@@ -349,6 +349,8 @@ void Grunt::ClientLink::ProveVersion(const uint8_t* versionChecksum) {
         // TODO
     }
 
+    command.Finalize();
+
     this->Send(command);
 }