diff --git a/etrago/appl.py b/etrago/appl.py
index a1745fa7..364e5be1 100644
--- a/etrago/appl.py
+++ b/etrago/appl.py
@@ -103,7 +103,7 @@
     "generator_noise": 789456,  # apply generator noise, False or seed number
     "extra_functionality": {},  # Choose function name or {}
     # Spatial Complexity:
-    "delete_dispensable_ac_buses": False, # bool. Find and delete unnecesary buses
+    "delete_dispensable_ac_buses": False, # bool. Find and delete unnecessary buses
     "network_clustering_ehv": False,  # clustering of HV buses to EHV buses
     "network_clustering": {
         "active": True,  # choose if clustering is activated