diff --git a/pylops_mpi/basicoperators/VStack.py b/pylops_mpi/basicoperators/VStack.py
index 14b24f8..96727f7 100644
--- a/pylops_mpi/basicoperators/VStack.py
+++ b/pylops_mpi/basicoperators/VStack.py
@@ -118,8 +118,9 @@ def __init__(self, ops: Sequence[LinearOperator],
 
     def _matvec(self, x: DistributedArray) -> DistributedArray:
         ncp = get_module(x.engine)
-        if x.partition is not Partition.BROADCAST:
-            raise ValueError(f"x should have partition={Partition.BROADCAST}, {x.partition} != {Partition.BROADCAST}")
+        if x.partition not in [Partition.BROADCAST, Partition.UNSAFE_BROADCAST]:
+            raise ValueError(f"x should have partition={Partition.BROADCAST},{Partition.UNSAFE_BROADCAST}"
+                             f"Got  {x.partition} instead...")
         y = DistributedArray(global_shape=self.shape[0], local_shapes=self.local_shapes_n,
                              engine=x.engine, dtype=self.dtype)
         y1 = []
diff --git a/pylops_mpi/signalprocessing/Fredholm1.py b/pylops_mpi/signalprocessing/Fredholm1.py
index d2e0327..3b8a9ef 100644
--- a/pylops_mpi/signalprocessing/Fredholm1.py
+++ b/pylops_mpi/signalprocessing/Fredholm1.py
@@ -108,8 +108,9 @@ def __init__(
 
     def _matvec(self, x: DistributedArray) -> DistributedArray:
         ncp = get_module(x.engine)
-        if x.partition is not Partition.BROADCAST:
-            raise ValueError(f"x should have partition={Partition.BROADCAST}, {x.partition} != {Partition.BROADCAST}")
+        if x.partition not in [Partition.BROADCAST, Partition.UNSAFE_BROADCAST]:
+            raise ValueError(f"x should have partition={Partition.BROADCAST},{Partition.UNSAFE_BROADCAST}"
+                             f"Got  {x.partition} instead...")
         y = DistributedArray(global_shape=self.shape[0], partition=Partition.BROADCAST,
                              engine=x.engine, dtype=self.dtype)
         x = x.local_array.reshape(self.dims).squeeze()
@@ -129,8 +130,9 @@ def _matvec(self, x: DistributedArray) -> DistributedArray:
 
     def _rmatvec(self, x: NDArray) -> NDArray:
         ncp = get_module(x.engine)
-        if x.partition is not Partition.BROADCAST:
-            raise ValueError(f"x should have partition={Partition.BROADCAST}, {x.partition} != {Partition.BROADCAST}")
+        if x.partition not in [Partition.BROADCAST, Partition.UNSAFE_BROADCAST]:
+            raise ValueError(f"x should have partition={Partition.BROADCAST},{Partition.UNSAFE_BROADCAST}"
+                             f"Got  {x.partition} instead...")
         y = DistributedArray(global_shape=self.shape[1], partition=Partition.BROADCAST,
                              engine=x.engine, dtype=self.dtype)
         x = x.local_array.reshape(self.dimsd).squeeze()