diff --git a/contracts/sui/libs/sui_rlp/sources/encoder.move b/contracts/sui/libs/sui_rlp/sources/encoder.move
index 5e2b93b1..1e63672b 100644
--- a/contracts/sui/libs/sui_rlp/sources/encoder.move
+++ b/contracts/sui/libs/sui_rlp/sources/encoder.move
@@ -49,7 +49,7 @@ module sui_rlp::encoder {
                 vector::append(&mut encoded_list,result);
 
             } else {
-                let length_bytes = utils::to_bytes_u64(len,false);
+                let length_bytes = utils::to_bytes_u64_sign(len,false);
                 let prefix = (0xf7 + vector::length(&length_bytes)) as u8;
                 vector::push_back(&mut encoded_list, prefix);
                 vector::append(&mut encoded_list, length_bytes);
@@ -69,7 +69,7 @@ module sui_rlp::encoder {
             let len_u8=(len as u8);
             vector::push_back(&mut length_info,(offset+len_u8));
         }else {
-            let length_bytes=utils::to_bytes_u64(len,false);
+            let length_bytes=utils::to_bytes_u64_sign(len,false);
             let length_byte_len=vector::length(&length_bytes);
             let length_byte_len=offset+(length_byte_len as u8);
             vector::push_back(&mut length_info,length_byte_len);
@@ -86,19 +86,19 @@ module sui_rlp::encoder {
     }
 
      public fun encode_u32(num:u32):vector<u8>{
-        let vec= utils::to_bytes_u32(num,true);
+        let vec= utils::to_bytes_u32_sign(num,true);
         encode(&vec)
 
     }
 
     public fun encode_u64(num:u64):vector<u8>{
-        let vec= utils::to_bytes_u64(num,true);
+        let vec= utils::to_bytes_u64_sign(num,true);
         encode(&vec)
         
     }
 
     public fun encode_u128(num:u128):vector<u8>{
-        let vec= utils::to_bytes_u128(num,true);
+        let vec= utils::to_bytes_u128_sign(num,true);
         encode(&vec)
     }
 
diff --git a/contracts/sui/libs/sui_rlp/sources/utils.move b/contracts/sui/libs/sui_rlp/sources/utils.move
index af37a07d..53529c3d 100644
--- a/contracts/sui/libs/sui_rlp/sources/utils.move
+++ b/contracts/sui/libs/sui_rlp/sources/utils.move
@@ -41,18 +41,35 @@ module sui_rlp::utils {
 
     }
 
-    public fun to_bytes_u128(number:u128,signed:bool):vector<u8>{
+    //Deprecated
+    public fun to_bytes_u128(number:u128):vector<u8>{
+        let bytes=bcs::to_bytes(&number);
+        to_signed_bytes(bytes,true)
+    }
+
+    public fun to_bytes_u128_sign(number:u128,signed:bool):vector<u8>{
         let bytes=bcs::to_bytes(&number);
         to_signed_bytes(bytes,signed)
     }
 
+    //Deprecated
+    public fun to_bytes_u64(number:u64):vector<u8>{
+        let bytes=bcs::to_bytes(&number);
+        to_signed_bytes(bytes,true)
+    }
 
-    public fun to_bytes_u64(number:u64,signed:bool):vector<u8>{
+    public fun to_bytes_u64_sign(number:u64,signed:bool):vector<u8>{
         let bytes=bcs::to_bytes(&number);
         to_signed_bytes(bytes,signed)
     }
+    
+    //Deprecated
+    public fun to_bytes_u32(number: u32): vector<u8> {
+        let bytes=bcs::to_bytes(&number);
+        to_signed_bytes(bytes,true)
+    }
 
-    public fun to_bytes_u32(number: u32,signed:bool): vector<u8> {
+    public fun to_bytes_u32_sign(number: u32,signed:bool): vector<u8> {
         let bytes=bcs::to_bytes(&number);
         to_signed_bytes(bytes,signed)
     }
@@ -120,7 +137,7 @@ module sui_rlp::utils_test {
     #[test]
     fun test_u32_conversion() {
         let num= (122 as u32);
-        let bytes= utils::to_bytes_u32(num,true);
+        let bytes= utils::to_bytes_u32_sign(num,true);
         let converted=utils::from_bytes_u32(&bytes);
         assert!(num==converted,0x01);
 
@@ -129,7 +146,7 @@ module sui_rlp::utils_test {
     #[test]
     fun test_u64_conversion() {
         let num= (55000 as u64);
-        let bytes= utils::to_bytes_u64(num,true);
+        let bytes= utils::to_bytes_u64_sign(num,true);
         let converted=utils::from_bytes_u64(&bytes);
         std::debug::print(&bytes);
         std::debug::print(&converted);
@@ -140,7 +157,7 @@ module sui_rlp::utils_test {
     #[test]
     fun test_u128_conversion() {
         let num= (1222223333 as u128);
-        let bytes= utils::to_bytes_u128(num,true);
+        let bytes= utils::to_bytes_u128_sign(num,true);
         std::debug::print(&bytes);
         let converted=utils::from_bytes_u128(&bytes);
         std::debug::print(&converted);