diff --git a/services/fuzzilli/fuzzilli.sh b/services/fuzzilli/fuzzilli.sh
index fc1d205b..c5288a31 100755
--- a/services/fuzzilli/fuzzilli.sh
+++ b/services/fuzzilli/fuzzilli.sh
@@ -7,6 +7,8 @@ set -e
 set -x
 set -o pipefail
 
+# disable core dumps
+ulimit -c 0
 
 # shellcheck source=recipes/linux/common.sh
 source "$HOME/.local/bin/common.sh"
diff --git a/services/fuzzilli/launch.sh b/services/fuzzilli/launch.sh
index 16ad1f29..fcf8cbbf 100755
--- a/services/fuzzilli/launch.sh
+++ b/services/fuzzilli/launch.sh
@@ -29,9 +29,6 @@ get-tc-secret google-logging-creds /etc/google/auth/application_default_credenti
   }
   trap onexit EXIT
 
-  # set sysctls defined in setup.sh
-  sysctl --load /etc/sysctl.d/60-fuzzilli.conf
-
   su ubuntu -c "$0"
 else
   echo "Launching fuzzilli run."