diff --git a/symmer/projection/contextual_subspace.py b/symmer/projection/contextual_subspace.py
index 51f9733f..2ae82900 100644
--- a/symmer/projection/contextual_subspace.py
+++ b/symmer/projection/contextual_subspace.py
@@ -26,6 +26,8 @@ class ContextualSubspace(S3Projection):
     5. drop the corresponding qubits from the Hamiltonian whilst
     6. fixing the +/-1 eigenvalues
     """
+    name = 'contextual_subspace' # for reference in QubitSubspaceManager
+
     def __init__(self,
             operator: PauliwordOp,
             noncontextual_strategy: str = 'diag',
diff --git a/symmer/projection/qubit_tapering.py b/symmer/projection/qubit_tapering.py
index f6e68da8..45e645fa 100644
--- a/symmer/projection/qubit_tapering.py
+++ b/symmer/projection/qubit_tapering.py
@@ -19,6 +19,8 @@ class QubitTapering(S3Projection):
 
     Steps 1-2 are handled in this class whereas we defer to the parent S3Projection for 3-5.
     """
+    name = 'qubit_tapering' # for reference in QubitSubspaceManager
+
     def __init__(self,
             operator: PauliwordOp, 
             target_sqp: str = 'Z'