diff --git a/Formula/elasticsearch-full.rb b/Formula/elasticsearch-full.rb
index 5b6f0af..f6560b8 100644
--- a/Formula/elasticsearch-full.rb
+++ b/Formula/elasticsearch-full.rb
@@ -117,7 +117,7 @@ def plist
 
     pid = testpath/"pid"
     begin
-      system "#{bin}/elasticsearch", "-d", "-p", pid, "-Epath.data=#{testpath}/data", "-Epath.logs=#{testpath}/logs", "-Enode.name=test-cli", "-Ehttp.port=#{port}"
+      system "#{bin}/elasticsearch", "-d", "-p", pid, "-Expack.security.enabled=false", "-Epath.data=#{testpath}/data", "-Epath.logs=#{testpath}/logs", "-Enode.name=test-cli", "-Ehttp.port=#{port}"
       sleep 30
       system "curl", "-XGET", "localhost:#{port}/"
       output = shell_output("curl -s -XGET localhost:#{port}/_cat/nodes")
@@ -140,7 +140,7 @@ def plist
 
     pid = testpath/"pid"
     begin
-      system "#{bin}/elasticsearch", "-d", "-p", pid
+      system "#{bin}/elasticsearch", "-d", "-p", pid, "-Expack.security.enabled=false"
       sleep 30
       system "curl", "-XGET", "localhost:#{port}/"
       output = shell_output("curl -s -XGET localhost:#{port}/_cat/nodes")