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Diffstat (limited to 'src/org/traccar/protocol/WialonProtocolDecoder.java')
-rw-r--r--src/org/traccar/protocol/WialonProtocolDecoder.java2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/org/traccar/protocol/WialonProtocolDecoder.java b/src/org/traccar/protocol/WialonProtocolDecoder.java
index 7939c7b67..de7073b67 100644
--- a/src/org/traccar/protocol/WialonProtocolDecoder.java
+++ b/src/org/traccar/protocol/WialonProtocolDecoder.java
@@ -47,7 +47,7 @@ public class WialonProtocolDecoder extends BaseProtocolDecoder {
.expression("([EW]);")
.number("(d+.?d*)?;") // speed
.number("(d+.?d*)?;") // course
- .number("(?:NA|(d+.?d*));") // altitude
+ .number("(?:NA|(-?d+.?d*));") // altitude
.number("(?:NA|(d+))") // satellites
.groupBegin().text(";")
.number("(?:NA|(d+.?d*));") // hdop