diff --git a/src/FDM/JSBSim/FGFDMExec.cpp b/src/FDM/JSBSim/FGFDMExec.cpp
index 8552a519c..714e5d184 100644
--- a/src/FDM/JSBSim/FGFDMExec.cpp
+++ b/src/FDM/JSBSim/FGFDMExec.cpp
@@ -211,7 +211,7 @@ FGFDMExec::~FGFDMExec()
   
   SetGroundCallback(0);
 
-  if (FDMctr > 0) (*FDMctr)--;
+  if (FDMctr != 0) (*FDMctr)--;
 
   Debug(1);
 }
diff --git a/src/FDM/JSBSim/input_output/FGInputSocket.cpp b/src/FDM/JSBSim/input_output/FGInputSocket.cpp
index 3eef2382c..2f1f9ee5d 100644
--- a/src/FDM/JSBSim/input_output/FGInputSocket.cpp
+++ b/src/FDM/JSBSim/input_output/FGInputSocket.cpp
@@ -192,7 +192,7 @@ void FGInputSocket::Read(bool Holding)
           } else {
             socket->Reply("Must be in HOLD to search properties\n");
           }
-        } else if (node > 0) {
+        } else {
           ostringstream buf;
           buf << argument << " = " << setw(12) << setprecision(6) << node->getDoubleValue() << endl;
           socket->Reply(buf.str());
diff --git a/src/Network/native_ctrls.cxx b/src/Network/native_ctrls.cxx
index 19a1a482d..81ad1866f 100644
--- a/src/Network/native_ctrls.cxx
+++ b/src/Network/native_ctrls.cxx
@@ -428,10 +428,10 @@ void FGNetCtrls2Props( FGNetCtrls *net, bool honor_freezes,
 //    node->setDoubleValue( net->brake_right );
 
     node = fgGetNode( "/controls/switches", true );
-    node->setBoolValue( "master-bat", net->master_bat > 0 );
-    node->setBoolValue( "master-alt", net->master_alt > 0);
-    node->setBoolValue( "master-avionics", net->master_avionics > 0);
-    
+    node->setBoolValue( "master-bat", net->master_bat != 0 );
+    node->setBoolValue( "master-alt", net->master_alt != 0 );
+    node->setBoolValue( "master-avionics", net->master_avionics > 0 );
+
     node = fgGetNode( "/environment", true );
     node->setDoubleValue( "wind-speed-kt", net->wind_speed_kt );
     node->setDoubleValue( "wind-from-heading-deg", net->wind_dir_deg );