diff --git a/src/Cockpit/dme.cxx b/src/Cockpit/dme.cxx
index f8e40efd3..fb416fcaa 100644
--- a/src/Cockpit/dme.cxx
+++ b/src/Cockpit/dme.cxx
@@ -161,6 +161,9 @@ FGDME::update(double dt)
             station = Point3D( x, y, z );
             dist = aircraft.distance3D( station ) * SG_METER_TO_NM;
             dist -= bias;
+            if ( dist < 0.0 ) {
+                dist = 0.0;
+            }
 
             current_time.stamp();
             long dMs = (current_time - last_time) / 1000;
diff --git a/src/Instrumentation/dme.cxx b/src/Instrumentation/dme.cxx
index f9d186ca1..5aea2a8ba 100644
--- a/src/Instrumentation/dme.cxx
+++ b/src/Instrumentation/dme.cxx
@@ -128,7 +128,11 @@ DME::update (double delta_time_sec)
         _last_distance_nm = distance_nm;
 
         _in_range_node->setBoolValue(true);
-        _distance_node->setDoubleValue(distance_nm - _transmitter_bias);
+        double tmp_dist = distance_nm - _transmitter_bias;
+        if ( tmp_dist < 0.0 ) {
+            tmp_dist = 0.0;
+        }
+        _distance_node->setDoubleValue( tmp_dist );
         _speed_node->setDoubleValue(speed_kt);
         _time_node->setDoubleValue(distance_nm/speed_kt*60.0);