1 files changed, 4 insertions, 4 deletions
diff --git a/src/org/traccar/protocol/WialonProtocolDecoder.java b/src/org/traccar/protocol/WialonProtocolDecoder.java
index c5b8890f3..c1a125601 100644
--- a/src/org/traccar/protocol/WialonProtocolDecoder.java
+++ b/src/org/traccar/protocol/WialonProtocolDecoder.java
@@ -88,12 +88,12 @@ public class WialonProtocolDecoder extends BaseProtocolDecoder {
 
         position.setLatitude(parser.nextCoordinate());
         position.setLongitude(parser.nextCoordinate());
-        position.setSpeed(UnitsConverter.knotsFromKph(parser.nextDouble()));
-        position.setCourse(parser.nextDouble());
-        position.setAltitude(parser.nextDouble());
+        position.setSpeed(UnitsConverter.knotsFromKph(parser.nextDouble(0)));
+        position.setCourse(parser.nextDouble(0));
+        position.setAltitude(parser.nextDouble(0));
 
         if (parser.hasNext()) {
-            int satellites = parser.nextInt();
+            int satellites = parser.nextInt(0);
             position.setValid(satellites >= 3);
             position.set(Position.KEY_SATELLITES, satellites);
         }