diff --git a/lib/BigInteger.php b/lib/BigInteger.php
index 2ac6dad..ac3afb6 100644
--- a/lib/BigInteger.php
+++ b/lib/BigInteger.php
@@ -324,6 +324,10 @@ public static function getBC($value = 0, $base = 10) {
             }
             if ($base == 16) {
                 $value = str_replace(" ", "", $value);
+                if(strtolower(substr($value, 0, 2)) === '0x')
+                {
+                    $value = str_replace("0x", "", $value);
+                }
                 if (!BigInteger::checkHex($value)) {
                     throw new \Exception("Invalid characters");
                 }