diff --git a/bindings/distrdf/python/DistRDF/Backends/Dask/Backend.py b/bindings/distrdf/python/DistRDF/Backends/Dask/Backend.py
index 84a9a0bbd4abc..b1c02d3d5e541 100644
--- a/bindings/distrdf/python/DistRDF/Backends/Dask/Backend.py
+++ b/bindings/distrdf/python/DistRDF/Backends/Dask/Backend.py
@@ -104,6 +104,17 @@ def __init__(self, daskclient: Optional[Client] = None):
         # N is the number of cores on the local machine.
         self.client = (daskclient if daskclient is not None else
                        Client(LocalCluster(n_workers=os.cpu_count(), threads_per_worker=1, processes=True)))
+        
+        workers = self.client.scheduler_info()["workers"]
+
+        for worker in workers.values():
+            threads = worker.get("nthreads", 1)
+
+            if threads > 1:
+                raise RuntimeError(
+                    "DistRDF with Dask does not support threaded workers. "
+                    "Please use processes=True and threads_per_worker=1."
+                )
 
     def optimize_npartitions(self) -> int:
         """