diff --git a/bsb/core.py b/bsb/core.py
index 4abd60bb..85a2de5d 100644
--- a/bsb/core.py
+++ b/bsb/core.py
@@ -270,7 +270,7 @@ def run_placement(self, strategies=None, fail_fast=True, pipelines=True):
         if pipelines:
             self.run_pipelines()
         if strategies is None:
-            strategies = [*self.placement.values()]
+            strategies = set(self.placement.values())
         strategies = PlacementStrategy.sort_deps(strategies)
         with self.create_job_pool(fail_fast=fail_fast) as pool:
             if pool.is_main():
@@ -309,7 +309,7 @@ def run_after_placement(self, hooks=None, fail_fast=None, pipelines=True):
         Run after placement hooks.
         """
         if hooks is None:
-            hooks = self.after_placement
+            hooks = set(self.after_placement.values())
         with self.create_job_pool(fail_fast) as pool:
             if pool.is_main():
                 pool.schedule(hooks)
@@ -321,7 +321,7 @@ def run_after_connectivity(self, hooks=None, fail_fast=None, pipelines=True):
         Run after placement hooks.
         """
         if hooks is None:
-            hooks = self.after_placement
+            hooks = set(self.after_connectivity.values())
         with self.create_job_pool(fail_fast) as pool:
             if pool.is_main():
                 pool.schedule(hooks)