diff --git a/scripts/fail-env.sh b/scripts/fail-env.sh
index 6cbf4e40..98e9a337 100644
--- a/scripts/fail-env.sh
+++ b/scripts/fail-env.sh
@@ -14,7 +14,7 @@ export FAIL_DISTRIBUTE_HOSTS=${FAIL_DISTRIBUTE_HOSTS:='ios kos virtuos plutonium
 # A whitespace-separated list of hosts to run experiments on.  If the host name
 # is followed by a ':' and a number, this specifies the number of clients to
 # run on that host (defaults to #CPUs).
-export FAIL_EXPERIMENT_HOSTS=${FAIL_EXPERIMENT_HOSTS:="bigbox.informatik.uni-erlangen.de plutonium uran virtuos ios:6 kos:6 bohrium polonium radon $(for hostnr in $(seq 100 254); do echo fiws$hostnr; done)"}
+export FAIL_EXPERIMENT_HOSTS=${FAIL_EXPERIMENT_HOSTS:="bigbox.informatik.uni-erlangen.de plutonium:4 uran:4 virtuos ios:6 kos:6 bohrium:12 polonium:12 radon $(for hostnr in $(seq 100 254); do echo fiws$hostnr; done)"}
 
 # A homedir-relative directory on the distribution hosts where all necessary
 # Fail* ingredients reside (see multiple-clients.sh).