diff --git a/pyseltongue/sharing.py b/pyseltongue/sharing.py
index bc1e182..b3231af 100644
--- a/pyseltongue/sharing.py
+++ b/pyseltongue/sharing.py
@@ -86,8 +86,8 @@ class SecretSharer():
         character set of the secrets and the character set of the shares that
         it expects to be dealing with.
     """
-    secret_charset = string.hexdigits[0:16][::-1]
-    share_charset = string.hexdigits[0:16][::-1]
+    secret_charset = string.hexdigits[0:17][::-1]
+    share_charset = string.hexdigits[0:17][::-1]
 
     def __init__(self):
         pass
@@ -114,14 +114,14 @@ def recover_secret(cls, shares):
 class HexToHexSecretSharer(SecretSharer):
     """ Standard sharer for converting hex secrets to hex shares.
     """
-    secret_charset = string.hexdigits[0:16][::-1]
-    share_charset = string.hexdigits[0:16][::-1]
+    secret_charset = string.hexdigits[0:17][::-1]
+    share_charset = string.hexdigits[0:17][::-1]
 
 class PlaintextToHexSecretSharer(SecretSharer):
     """ Good for converting secret messages into standard hex shares.
     """
     secret_charset = string.printable[::-1]
-    share_charset = string.hexdigits[0:16][::-1]
+    share_charset = string.hexdigits[0:17][::-1]
 
 class BitcoinToB58SecretSharer(SecretSharer):
     """ Good for converting Bitcoin secret keys into shares that can be
diff --git a/test/test_plaintext.py b/test/test_plaintext.py
index f99d5cc..5c57977 100644
--- a/test/test_plaintext.py
+++ b/test/test_plaintext.py
@@ -33,3 +33,12 @@ def test_zero_leading_ascii_to_hex_sharing(self):
         self.split_and_recover_secret_alt_parts(
             3, 5, '0B4A30EEFEBA6783EA68F79AD5DC85E4DDCD83D4'
         )
+
+    def test_f_leading_ascii_to_hex_sharing(self):
+        """Test leading 0 issue"""
+        self.split_and_recover_secret(
+            3, 5, 'f6b00c143f637e83f0eb2366888d1c02878dc32366148648f08fea67c8704cdd'
+        )
+        self.split_and_recover_secret_alt_parts(
+            3, 5, 'f6b00c143f637e83f0eb2366888d1c02878dc32366148648f08fea67c8704cdd'
+        )