diff --git a/src/main/java/com/sunyard/sge/database/SydApiBaseFunction.java b/src/main/java/com/sunyard/sge/database/SydApiBaseFunction.java
index 2d653e4..9a83e26 100644
--- a/src/main/java/com/sunyard/sge/database/SydApiBaseFunction.java
+++ b/src/main/java/com/sunyard/sge/database/SydApiBaseFunction.java
@@ -495,7 +495,7 @@ public class SydApiBaseFunction implements SydApi {
                         byte[] mac = new byte[16];
                         byte[] buff = list.get(i);
                         System.arraycopy(buff, buff.length - 16, mac, 0, 16);
-                        ret[i] = Util.bytes2HexString(buff);
+                        ret[i] = Util.bytes2HexString(mac);
                     }
                     return ret;
 
@@ -516,7 +516,7 @@ public class SydApiBaseFunction implements SydApi {
                             byte[] mac = new byte[16];
                             byte[] buff = list.get(i);
                             System.arraycopy(buff, buff.length - 16, mac, 0, 16);
-                            ret[i] = Util.bytes2HexString(buff);
+                            ret[i] = Util.bytes2HexString(mac);
                         }
                         return ret;
 
@@ -566,7 +566,7 @@ public class SydApiBaseFunction implements SydApi {
                         byte[] mac = new byte[16];
                         byte[] buff = list.get(i);
                         System.arraycopy(buff, buff.length - 16, mac, 0, 16);
-                        ret[i] = pcMac[i].equals(Util.bytes2HexString(buff));
+                        ret[i] = pcMac[i].equals(Util.bytes2HexString(mac));
                     }
 
                     return ret;
@@ -587,7 +587,7 @@ public class SydApiBaseFunction implements SydApi {
                             byte[] mac = new byte[16];
                             byte[] buff = list.get(i);
                             System.arraycopy(buff, buff.length - 16, mac, 0, 16);
-                            ret[i] = pcMac[i].equals(Util.bytes2HexString(buff));
+                            ret[i] = pcMac[i].equals(Util.bytes2HexString(mac));
                         }
 
                         return ret;