diff --git a/lib/transaction.py b/lib/transaction.py
index f15aa237..4deae9f7 100644
--- a/lib/transaction.py
+++ b/lib/transaction.py
@@ -840,7 +840,7 @@ class Transaction:
     def as_dict(self):
         import json
         out = {
-            "hex":self.raw,
+            "hex":str(self),
             "complete":self.is_complete()
             }
         return out
@@ -849,8 +849,8 @@ class Transaction:
     def requires_fee(self, verifier):
         # see https://en.bitcoin.it/wiki/Transaction_fees
         threshold = 57600000
-        size = len(self.raw)/2
-        if size >= 10000: 
+        size = len(str(self))/2
+        if size >= 10000:
             return True
 
         for o in self.get_outputs():
diff --git a/lib/wallet.py b/lib/wallet.py
index d109f7d2..8a5f4111 100644
--- a/lib/wallet.py
+++ b/lib/wallet.py
@@ -355,7 +355,9 @@ class Abstract_Wallet(object):
         return self.accounts[account_id].get_pubkeys(*sequence)
 
     def add_keypairs(self, tx, keypairs, password):
-        # first check the provided password. This will raise if invalid.
+
+        if self.is_watching_only():
+            return
         self.check_password(password)
 
         addr_list, xpub_list = tx.inputs_to_sign()