1 files changed, 1 insertions, 1 deletions
diff --git a/src/main/java/org/traccar/protocol/Gl200TextProtocolDecoder.java b/src/main/java/org/traccar/protocol/Gl200TextProtocolDecoder.java
index 290f35d83..5ee3761dd 100644
--- a/src/main/java/org/traccar/protocol/Gl200TextProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/Gl200TextProtocolDecoder.java
@@ -1398,7 +1398,7 @@ public class Gl200TextProtocolDecoder extends BaseProtocolDecoder {
     private static final Pattern PATTERN_BASIC = new PatternBuilder()
             .text("+").expression("(?:RESP|BUFF)").text(":")
             .expression("GT...,")
-            .number("(?:[0-9A-Z]{2}xxxx)?,").optional() // protocol version
+            .expression("[^,]+,").optional()     // protocol version
             .number("(d{15}|x{14}),")            // imei
             .any()
             .text(",")