diff --git a/tools/jenkins/run_interop.sh b/tools/jenkins/run_interop.sh
index 072812b3ba4ce031dbe7f14c5a68c08a28f768de..14e075691cd31303576519bf5a6efe0fdf9e59b1 100755
--- a/tools/jenkins/run_interop.sh
+++ b/tools/jenkins/run_interop.sh
@@ -34,4 +34,4 @@ set -ex
 # Enter the gRPC repo root
 cd $(dirname $0)/../..
 
-tools/run_tests/run_interop_tests.py --l all --s all --cloud_to_prod --use_docker -t -j 8 $@ || true
+tools/run_tests/run_interop_tests.py -l all -s all --cloud_to_prod --use_docker -t -j 8 $@ || true