diff --git a/solr/bin/solr b/solr/bin/solr
index a346cdac7d6..9ccc93119b3 100755
--- a/solr/bin/solr
+++ b/solr/bin/solr
@@ -1267,7 +1267,7 @@ fi
 
 if [ "$SOLR_MODE" == 'solrcloud' ]; then
   if [ -z "$ZK_CLIENT_TIMEOUT" ]; then
-    ZK_CLIENT_TIMEOUT="15000"
+    ZK_CLIENT_TIMEOUT="30000"
   fi
   
   CLOUD_MODE_OPTS=("-DzkClientTimeout=$ZK_CLIENT_TIMEOUT")