diff --git a/src/parameters.toml b/src/parameters.toml
index e80a55c2172311150a95cbd83a1fdb8316a5c9d2..e7989bb7dd9377843175f7dc10a34988ce0a9883 100644
--- a/src/parameters.toml
+++ b/src/parameters.toml
@@ -9,7 +9,7 @@
 [core]
 configfile = "src/parameters.toml" # location of the configuration file
 outdir = "results" # location and name of the output folder
-overwrite = "ask" # overwrite the output directory? (true/false/"ask")
+overwrite = true # overwrite the output directory? (true/false/"ask")
 csvoutput = true # save collected data in CSV files
 visualise = true # generate result graphs
 storedata = true # keep collected data in memory