diff --git a/hack/run-tests.sh b/hack/run-tests.sh
index 63b17d4c5c..6b176768eb 100755
--- a/hack/run-tests.sh
+++ b/hack/run-tests.sh
@@ -52,6 +52,8 @@ TEST_REPORT=${TEST_REPORT:-""}
 output_volume_args=""
 output_args=""
 
+GENERATE_TIMINGS=${GENERATE_TIMINGS:-""}
+
 if [ ! -z "$GENERATE_TIMINGS" ]; then
   export TEST_REPORT=1
 fi