diff --git a/common/src/utils/hex.rs b/common/src/utils/hex.rs
index 1db57408..e66d7a62 100644
--- a/common/src/utils/hex.rs
+++ b/common/src/utils/hex.rs
@@ -14,7 +14,7 @@ impl ToLowerHex for H256 {
 
 impl ToLowerHex for U256 {
     fn to_lower_hex(&self) -> String {
-        format!("{:#032x}", self)
+        format!("{:#0x}", self)
     }
 }