1 files changed, 1 insertions, 1 deletions
diff --git a/src/org/traccar/protocol/AtrackFrameDecoder.java b/src/org/traccar/protocol/AtrackFrameDecoder.java
index 970ddc66b..267b6de12 100644
--- a/src/org/traccar/protocol/AtrackFrameDecoder.java
+++ b/src/org/traccar/protocol/AtrackFrameDecoder.java
@@ -35,7 +35,7 @@ public class AtrackFrameDecoder extends LengthFieldBasedFrameDecoder {
             ChannelBuffer buf) throws Exception {
         
         // Keep alive message
-        if (buf.readableBytes() >= KEEPALIVE_LENGTH ||
+        if (buf.readableBytes() >= KEEPALIVE_LENGTH &&
             buf.getUnsignedShort(buf.readerIndex()) == 0xfe02) {
             channel.write(buf.readBytes(KEEPALIVE_LENGTH));
         }