1 files changed, 2 insertions, 6 deletions
diff --git a/src/main/java/org/traccar/helper/Checksum.java b/src/main/java/org/traccar/helper/Checksum.java
index e660790ef..db5817275 100644
--- a/src/main/java/org/traccar/helper/Checksum.java
+++ b/src/main/java/org/traccar/helper/Checksum.java
@@ -200,18 +200,14 @@ public final class Checksum {
         return (10 - (checksum % 10)) % 10;
     }
 
-    public static int udp(ByteBuffer data) {
+    public static int ip(ByteBuffer data) {
         int sum = 0;
-        int len = data.capacity();
-        for (int j = 0; len > 1; len--) {
+        while (data.remaining() > 0) {
             sum += data.get() & 0xff;
             if ((sum & 0x80000000) > 0) {
                 sum = (sum & 0xffff) + (sum >> 16);
             }
         }
-        if (len == 1) {
-            sum += data.get() & 0xff;
-        }
         while ((sum >> 16) > 0) {
             sum = (sum & 0xffff) + sum >> 16;
         }