diff --git a/execution/strategies/strategies/default_strategy.py b/execution/strategies/strategies/default_strategy.py
index b0c559eab23f14f095ce94792d5df105a86bdd22..93c17c58a5f335824748ae86dfbeb6049696575e 100644
--- a/execution/strategies/strategies/default_strategy.py
+++ b/execution/strategies/strategies/default_strategy.py
@@ -9,7 +9,7 @@ def execute(config):
     for dim_value in config.dim_values:
         for replica in config.replicas:
             subexperiment_counter+=1
-            print("Run subexperiment {}/{} with dimension value {} and {} replicas.".format(subexperiment_counter, subexperiments_total, dim_value, replica))
+            print(f"Run subexperiment {subexperiment_counter}/{subexperiments_total} with dimension value {dim_value} and {replica} replicas.")
 
             subexperiment_config = SubexperimentConfig(config.use_case, subexperiment_counter, dim_value, replica, config.partitions, config.cpu_limit, config.memory_limit, config.kafka_streams_commit_interval_ms, config.execution_minutes, config.subexperiment_executor)
 
diff --git a/execution/strategies/subexperiment_execution/subexperiment_executor.py b/execution/strategies/subexperiment_execution/subexperiment_executor.py
index 92d1d35aa893cd9a1dd5b3ed524803a1825f4a70..7e4d2359ffa5bc9b339dadd9158fd309321727e0 100644
--- a/execution/strategies/subexperiment_execution/subexperiment_executor.py
+++ b/execution/strategies/subexperiment_execution/subexperiment_executor.py
@@ -5,4 +5,4 @@ import os
 dirname = os.path.dirname(__file__)
 os.chdir(dirname+"/../../")
 def execute(subexperiment_config):
-    os.system("./run_uc{}.sh {} {} {} {} {} {} {} {}".format(subexperiment_config.use_case, subexperiment_config.counter, subexperiment_config.dim_value, subexperiment_config.replicas, subexperiment_config.partitions, subexperiment_config.cpu_limit, subexperiment_config.memory_limit, subexperiment_config.kafka_streams_commit_interval_ms, subexperiment_config.execution_minutes))
\ No newline at end of file
+    os.system(f"./run_uc{subexperiment_config.use_case}.sh {subexperiment_config.counter} {subexperiment_config.dim_value} {subexperiment_config.replicas} {subexperiment_config.partitions} {subexperiment_config.cpu_limit} {subexperiment_config.memory_limit} {subexperiment_config.kafka_streams_commit_interval_ms} {subexperiment_config.execution_minutes}")
\ No newline at end of file