diff --git a/etrago/cluster/electrical.py b/etrago/cluster/electrical.py
index a70a3b28..44fc5526 100755
--- a/etrago/cluster/electrical.py
+++ b/etrago/cluster/electrical.py
@@ -178,7 +178,8 @@ def adjust_no_electric_network(etrago, busmap, cluster_met):
                 & (network2.links["carrier"] == map_carrier[carry])
             ].copy()
             df["elec"] = df["bus0"].isin(busmap.keys())
-            df = df[df["elec"] is True]
+
+            df = df[df["elec"]]
             if len(df) > 0:
                 bus_hv = df["bus0"][0]
 
diff --git a/etrago/cluster/spatial.py b/etrago/cluster/spatial.py
index 7499ae19..be78296a 100755
--- a/etrago/cluster/spatial.py
+++ b/etrago/cluster/spatial.py
@@ -98,7 +98,7 @@ def nan_links(x):
 
 
 def ext_storage(x):
-    v = any(x[x is True])
+    v = any(x[x])
     return v
 
 
diff --git a/etrago/tools/execute.py b/etrago/tools/execute.py
index 81844c22..1175ef9e 100755
--- a/etrago/tools/execute.py
+++ b/etrago/tools/execute.py
@@ -810,7 +810,7 @@ def import_gen_from_links(network):
 
     # if foreign lines are DC, execute pf only on sub_network in Germany
     if (args["foreign_lines"]["carrier"] == "DC") or (
-        (args["scn_extension"] is None)
+        (args["scn_extension"] is not None)
         and ("BE_NO_NEP 2035" in args["scn_extension"])
     ):
         foreign_bus, foreign_comp, foreign_series = drop_foreign_components(
@@ -883,7 +883,7 @@ def import_gen_from_links(network):
     if (
         (args["foreign_lines"]["carrier"] == "DC")
         or (
-            (args["scn_extension"] is None)
+            (args["scn_extension"] is not None)
             and ("BE_NO_NEP 2035" in args["scn_extension"])
         )
     ) and etrago.args["pf_post_lopf"]["add_foreign_lopf"]: