diff --git a/server/mempool.py b/server/mempool.py
index 8510d50..4236f06 100644
--- a/server/mempool.py
+++ b/server/mempool.py
@@ -329,7 +329,9 @@ class MemPool(util.LoggedClass):
             txout_pairs = item[1]
             for pos, (hX, value) in enumerate(txout_pairs):
                 if hX == hashX:
-                    utxos.append(UTXO(-1, pos, hex_hash, 0, value))
+                    # Unfortunately UTXO holds a binary hash
+                    utxos.append(UTXO(-1, pos, hex_str_to_hash(hex_hash),
+                                      0, value))
         return utxos
 
     async def potential_spends(self, hashX):