diff --git a/elasticsearch/config/10-config_cluster.sh b/elasticsearch/config/10-config_cluster.sh
index 1e200c8d..51924331 100644
--- a/elasticsearch/config/10-config_cluster.sh
+++ b/elasticsearch/config/10-config_cluster.sh
@@ -13,7 +13,6 @@ then
   
   # Set the cluster.name and discovery.zen.minimun_master_nodes variables
   sed -i 's:cluster.name\: "docker-cluster":cluster.name\: "'$CLUSTER_NAME'":g' $elastic_config_file
-  sed -i 's:discovery.zen.minimum_master_nodes\: 1:discovery.zen.minimum_master_nodes\: '$CLUSTER_NUMBER_OF_MASTERS':g' $elastic_config_file
 
   # Add the cluster configuration
   echo "
@@ -31,6 +30,7 @@ bootstrap:
 discovery:
   zen:
     ping.unicast.hosts: ${CLUSTER_DISCOVERY_SERVICE}
+    minimum_master_nodes: ${CLUSTER_NUMBER_OF_MASTERS}
   
 " >> $elastic_config_file
 fi