diff --git a/scripts/cluster_network.py b/scripts/cluster_network.py
index 826a3528..5683a582 100644
--- a/scripts/cluster_network.py
+++ b/scripts/cluster_network.py
@@ -207,10 +207,10 @@ if __name__ == "__main__":
 
     if snakemake.wildcards.clusters.endswith('m'):
         n_clusters = int(snakemake.wildcards.clusters[:-1])
-        aggregate_carriers = None # All
+        aggregate_carriers = pd.Index(n.generators.carrier.unique()).difference(renewable_carriers)
     else:
         n_clusters = int(snakemake.wildcards.clusters)
-        aggregate_carriers = pd.Index(n.generators.carrier.unique()).difference(renewable_carriers)
+        aggregate_carriers = None # All
 
     if n_clusters == len(n.buses):
         # Fast-path if no clustering is necessary