diff --git a/qiskit/circuit/bit.py b/qiskit/circuit/bit.py
index f4c501f55ac6..f2d17f378bd9 100644
--- a/qiskit/circuit/bit.py
+++ b/qiskit/circuit/bit.py
@@ -70,7 +70,10 @@ def index(self, value):
 
     def __repr__(self):
         """Return the official string representing the bit."""
-        return self._repr
+        if hasattr(self, '_repr'):
+            return self._repr
+        else:
+            return super().__repr__()
 
     def __hash__(self):
         return self._hash
diff --git a/qiskit/circuit/quantumcircuit.py b/qiskit/circuit/quantumcircuit.py
index 5ef05744e261..04e3734e0c70 100644
--- a/qiskit/circuit/quantumcircuit.py
+++ b/qiskit/circuit/quantumcircuit.py
@@ -260,7 +260,10 @@ def metadata(self):
         associate any circuit metadata with the results it returns from
         execution of that circuit.
         """
-        return self._metadata
+        if hasattr(self, '_metadata'):
+            return self._metadata
+        else:
+            return None
 
     @metadata.setter
     def metadata(self, metadata):