diff --git a/tasks/first_neighbor.py b/tasks/first_neighbor.py
index 6b485cb..44e9774 100644
--- a/tasks/first_neighbor.py
+++ b/tasks/first_neighbor.py
@@ -63,6 +63,7 @@ def first_neighbor(task_hook: TaskHook):
     custom_edges = task_hook.parameters.get("custom_edges", False)
     
     no_default_edges = task_hook.parameters.get("exclude_drugstone_ppi_edges", False)
+    allow_self_references = task_hook.parameters["config"].get("selfReferences", False)
     
     
     # Set number of threads if OpenMP support is enabled.
@@ -214,6 +215,9 @@ def first_neighbor(task_hook: TaskHook):
             }
             edges.append(edge)
 
+    if not allow_self_references:
+        edges = [edge for edge in edges if edge["from"] != edge["to"]]
+
     # Filter nodes to keep only upstream regulators if parameter is set
     only_upstream_regulators = task_hook.parameters.get("only_upstream_regulators", False)
     is_omnipath = ppi_dataset["name"] == "OmniPath"
diff --git a/tasks/leiden_clustering.py b/tasks/leiden_clustering.py
index f45e9ef..2bb5dc2 100644
--- a/tasks/leiden_clustering.py
+++ b/tasks/leiden_clustering.py
@@ -158,7 +158,7 @@ def leiden_clustering(task_hook: TaskHook):
     # If seed is not set, generate a random seed.
     if seed is None:
         seed = random.randint(1, 10000)
-        task_hook.parameters["seed"] = seed
+    task_hook.parameters["seed"] = seed
         
     # Parsing input file.
     task_hook.set_progress(1 / 4.0, "Parsing input.")
diff --git a/tasks/louvain_clustering.py b/tasks/louvain_clustering.py
index 13258d7..49d27db 100644
--- a/tasks/louvain_clustering.py
+++ b/tasks/louvain_clustering.py
@@ -157,7 +157,7 @@ def louvain_clustering(task_hook: TaskHook):
     # If seed is not set, generate a random seed.
     if seed is None:
         seed = random.randint(1, 10000)
-        task_hook.parameters["seed"] = seed
+    task_hook.parameters["seed"] = seed
     
     # Parsing input file.
     task_hook.set_progress(1 / 4.0, "Parsing input.")