diff --git a/lbrynet/cryptstream/client/CryptBlobHandler.py b/lbrynet/cryptstream/client/CryptBlobHandler.py
index c8b52a473..3df94f5bd 100644
--- a/lbrynet/cryptstream/client/CryptBlobHandler.py
+++ b/lbrynet/cryptstream/client/CryptBlobHandler.py
@@ -1,5 +1,6 @@
 import binascii
 from zope.interface import implements
+from twisted.internet import defer
 from lbrynet.cryptstream.CryptBlob import StreamBlobDecryptor
 from lbrynet.interfaces import IBlobHandler
 
@@ -14,7 +15,10 @@ class CryptBlobHandler(object):
     ######## IBlobHandler #########
 
     def handle_blob(self, blob, blob_info):
-        blob_decryptor = StreamBlobDecryptor(
-            blob, self.key, binascii.unhexlify(blob_info.iv), blob_info.length)
+        try:
+            blob_decryptor = StreamBlobDecryptor(blob, self.key, binascii.unhexlify(blob_info.iv),
+                                                 blob_info.length)
+        except ValueError as err:
+            return defer.fail(err)
         d = blob_decryptor.decrypt(self.write_func)
         return d