diff --git a/htools/Ganeti/Rpc.hs b/htools/Ganeti/Rpc.hs
index b46b3baa4227d21ef54a9639674d19764c26f992..e0007c8466fbf17a3bffb0645a8f02ee39f93fb6 100644
--- a/htools/Ganeti/Rpc.hs
+++ b/htools/Ganeti/Rpc.hs
@@ -387,7 +387,7 @@ instance RpcCall RpcCallVersion where
   rpcCallName _          = "version"
   rpcCallTimeout _       = rpcTimeoutToRaw Urgent
   rpcCallAcceptOffline _ = True
-  rpcCallData call _     = J.encode [call]
+  rpcCallData _          = J.encode
 
 instance Rpc RpcCallVersion RpcResultVersion where
   rpcResultFill _ res = fromJSValueToRes res RpcResultVersion