diff --git a/src/litdata/streaming/resolver.py b/src/litdata/streaming/resolver.py
index 6c8dc9d3..98ce5fef 100644
--- a/src/litdata/streaming/resolver.py
+++ b/src/litdata/streaming/resolver.py
@@ -108,10 +108,10 @@ def _resolve_studio(dir_path: str, target_name: Optional[str], target_id: Option
     project_id = os.getenv("LIGHTNING_CLOUD_PROJECT_ID", None)
 
     if cluster_id is None:
-        raise RuntimeError("The `cluster_id` couldn't be found from the environment variables.")
+        raise RuntimeError("The `LIGHTNING_CLUSTER_ID` couldn't be found from the environment variables.")
 
     if project_id is None:
-        raise RuntimeError("The `project_id` couldn't be found from the environment variables.")
+        raise RuntimeError("The `LIGHTNING_CLOUD_PROJECT_ID` couldn't be found from the environment variables.")
 
     clusters = client.cluster_service_list_project_clusters(project_id).clusters
 
@@ -147,7 +147,7 @@ def _resolve_s3_connections(dir_path: str) -> Dir:
     # Get the ids from env variables
     project_id = os.getenv("LIGHTNING_CLOUD_PROJECT_ID", None)
     if project_id is None:
-        raise RuntimeError("The `project_id` couldn't be found from the environment variables.")
+        raise RuntimeError("The `LIGHTNING_CLOUD_PROJECT_ID` couldn't be found from the environment variables.")
 
     target_name = dir_path.split("/")[3]
 
diff --git a/tests/streaming/test_resolver.py b/tests/streaming/test_resolver.py
index 742f066d..164120f5 100644
--- a/tests/streaming/test_resolver.py
+++ b/tests/streaming/test_resolver.py
@@ -23,7 +23,7 @@ def test_src_resolver_s3_connections(monkeypatch, lightning_cloud_mock):
     auth = login.Auth()
     auth.save(user_id="7c8455e3-7c5f-4697-8a6d-105971d6b9bd", api_key="e63fae57-2b50-498b-bc46-d6204cbf330e")
 
-    with pytest.raises(RuntimeError, match="`project_id` couldn't be found from the environment variables."):
+    with pytest.raises(RuntimeError, match="`LIGHTNING_CLOUD_PROJECT_ID` couldn't be found from the environment variables."):
         resolver._resolve_dir("/teamspace/s3_connections/imagenet")
 
     monkeypatch.setenv("LIGHTNING_CLOUD_PROJECT_ID", "project_id")