diff --git a/src/FDM/JSBSim/JSBSim.hxx b/src/FDM/JSBSim/JSBSim.hxx
index d6c3c6ab9..54799158e 100644
--- a/src/FDM/JSBSim/JSBSim.hxx
+++ b/src/FDM/JSBSim/JSBSim.hxx
@@ -238,9 +238,12 @@ private:
     JSBSim::FGAccelerations*   Accelerations;
     JSBSim::FGPropertyManager* PropertyManager;
 
+    // disabling unused members
+    /*
     int runcount;
     double trim_elev;
     double trim_throttle;
+     */
 
     SGPropertyNode_ptr startup_trim;
     SGPropertyNode_ptr trimmed;
diff --git a/src/FDM/JSBSim/input_output/FGfdmSocket.h b/src/FDM/JSBSim/input_output/FGfdmSocket.h
index 53a1dc641..46ba7d9ce 100644
--- a/src/FDM/JSBSim/input_output/FGfdmSocket.h
+++ b/src/FDM/JSBSim/input_output/FGfdmSocket.h
@@ -114,7 +114,7 @@ public:
 private:
   int sckt;
   int sckt_in;
-  int udpsckt;
+  //int udpsckt;
   DirectionType Direction;
   ProtocolType Protocol;
   struct sockaddr_in scktName;