diff --git a/src/ansys/dpf/core/data_sources.py b/src/ansys/dpf/core/data_sources.py
index 847fad95cbc..42e28648007 100644
--- a/src/ansys/dpf/core/data_sources.py
+++ b/src/ansys/dpf/core/data_sources.py
@@ -66,6 +66,8 @@ class DataSources:
         Server with the channel connected to the remote or local instance. The
         default is ``None``, in which case an attempt is made to use the global
         server.
+    key:
+        Explicit key to associate to the result file given as ``result_path``.
 
     Examples
     --------
@@ -85,6 +87,7 @@ def __init__(
         result_path: Union[str, os.PathLike] = None,
         data_sources: Union[dpf.DataSources, int, data_sources_pb2.DataSources] = None,
         server: AnyServerType = None,
+        key: str = "",
     ):
         """Initialize a connection with the server."""
         # step 1: get server
@@ -127,7 +130,7 @@ def __init__(
                 self._internal_obj = self._api.data_sources_new("data_sources")
 
         if result_path is not None:
-            self.set_result_file_path(result_path)
+            self.set_result_file_path(result_path, key=key)
 
     def set_result_file_path(
         self,
diff --git a/tests/test_datasources.py b/tests/test_datasources.py
index 577aeac2cd0..e1719ac87e4 100644
--- a/tests/test_datasources.py
+++ b/tests/test_datasources.py
@@ -39,6 +39,9 @@ def test_create_data_sources(server_type):
 def test_create_with_resultpath_data_sources(allkindofcomplexity, server_type):
     data_sources = dpf.core.DataSources(allkindofcomplexity, server=server_type)
     assert data_sources._internal_obj
+    assert data_sources.result_key == "rst"
+    data_sources = dpf.core.DataSources(allkindofcomplexity, server=server_type, key="test")
+    assert data_sources.result_key == "test"
 
 
 def test_setresultpath_data_sources(allkindofcomplexity, server_type):