diff --git a/services/activity-spec/activity-spec-init/start.sh b/services/activity-spec/activity-spec-init/start.sh
index 5242bd5..defc8ef 100644
--- a/services/activity-spec/activity-spec-init/start.sh
+++ b/services/activity-spec/activity-spec-init/start.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 if [[ -z "${CASSANDRA_HOST}" ]]; then
 	echo "CASSANDRA_HOST environment variable must be set"