diff --git a/contracts/sui/xcall/sources/main.move b/contracts/sui/xcall/sources/main.move
index 6152f54f..abf6ac0d 100644
--- a/contracts/sui/xcall/sources/main.move
+++ b/contracts/sui/xcall/sources/main.move
@@ -54,7 +54,7 @@ module xcall::main {
     const EInvalidConnectionId:u64 =15;
 
     const MAX_DATA_SIZE: u64 = 2048;
-    const CURRENT_VERSION: u64 = 1;
+    const CURRENT_VERSION: u64 = 2;
 
     /*************Events*****************/
 
diff --git a/contracts/sui/xcall/sources/utils.move b/contracts/sui/xcall/sources/utils.move
index ee049e16..66e0ff9d 100644
--- a/contracts/sui/xcall/sources/utils.move
+++ b/contracts/sui/xcall/sources/utils.move
@@ -36,7 +36,9 @@ module xcall::xcall_utils {
    public fun address_to_hex_string(address:&address): String {
         let bytes = bcs::to_bytes(address);
         let hex_bytes = hex::encode(bytes);
-        string::utf8(hex_bytes)
+        let mut prefix = string::utf8(b"0x");
+        prefix.append(string::utf8(hex_bytes));
+        prefix
     }
 
     public fun address_from_hex_string(str: &String): address {