diff --git a/src/main/java/conflux/web3j/response/Receipt.java b/src/main/java/conflux/web3j/response/Receipt.java
index 3047298..0abc32c 100644
--- a/src/main/java/conflux/web3j/response/Receipt.java
+++ b/src/main/java/conflux/web3j/response/Receipt.java
@@ -48,7 +48,7 @@ public void setBlockHash(String blockHash) {
 	}
 	
 	public BigInteger getEpochNumber() {
-		return new BigInteger(this.epochNumber);
+		return Numeric.decodeQuantity(this.epochNumber);
 	}
 	
 	public void setEpochNumber(String epochNumber) {