diff --git a/ucoinpy/documents/block.py b/ucoinpy/documents/block.py
index c3fc78a82a51d300d7721f588d50034d7825c31f..751ae9de50c8742911c62c072642cc7ca85e7803 100644
--- a/ucoinpy/documents/block.py
+++ b/ucoinpy/documents/block.py
@@ -124,6 +124,7 @@ BOTTOM_SIGNATURE
         previousissuer_re = re.compile("PreviousIssuer: ([1-9A-Za-z][^OIl]{43,45})\n")
         prev_issuer = previousissuer_re.match(line[n])
         
+        n = 11
         parameters = ""
         members_count = ""
         identities = ""