diff --git a/entrypoint-sentinel.sh b/entrypoint-sentinel.sh
index 12e0584da490f42769160e02f7960633019eecfa..dd4a1d336dc0c4a8a69b8349918f12b80a789e96 100644
--- a/entrypoint-sentinel.sh
+++ b/entrypoint-sentinel.sh
@@ -1,6 +1,7 @@
 #!/bin/bash
 
 #Redis Configuration needed
+MASTER_GROUP_NAME=${MASTER_GROUP_NAME:-"mymaster"}
 PORT=${PORT:-6379}
 IP=${IP:-0.0.0.0}
 QUORUM=${QUORUM:-2}