diff --git a/de/heat-templates/scripts/instance_boot.sh b/de/heat-templates/scripts/instance_boot.sh
index 69346a4..f3ee628 100644
--- a/de/heat-templates/scripts/instance_boot.sh
+++ b/de/heat-templates/scripts/instance_boot.sh
@@ -81,7 +81,7 @@
 function wait_condition_send {
     local status=${1:-SUCCESS}
     local reason=${2:-\"empty\"}
-    local data=${3:-empty}
+    local data=${3:-\"empty\"}
     local data_binary="{\"status\": \"$status\", \"reason\": \"$reason\", \"data\": $data}"
     echo "Trying to send signal to wait condition 5 times: $data_binary"
     WAIT_CONDITION_NOTIFY_EXIT_CODE=2