diff --git a/src/flow/oneflow-server.rb b/src/flow/oneflow-server.rb
index 4f7d3d7a67..baaf4055cb 100644
--- a/src/flow/oneflow-server.rb
+++ b/src/flow/oneflow-server.rb
@@ -528,9 +528,9 @@ post '/service_template/:id/action' do
 
         # remove escapes
         networks_values.each do |net|
-            net.map do |key, value|
-                value.map do |key1, value1|
-                    value1.gsub!("\\\"", '')
+            net.map do |_, value|
+                value.map do |_, value1|
+                    value1.gsub!('\\"', '')
                 end
             end
         end