diff --git a/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/FlaskConnexionCodegen.java b/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/FlaskConnexionCodegen.java
index c4f9eba2f665..cf4b7a5b5c81 100644
--- a/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/FlaskConnexionCodegen.java
+++ b/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/FlaskConnexionCodegen.java
@@ -141,6 +141,8 @@ public class FlaskConnexionCodegen extends DefaultCodegen implements CodegenConf
                 defaultValue("default_controller"));
         cliOptions.add(new CliOption(SUPPORT_PYTHON2, "support python2").
                 defaultValue("false"));
+        cliOptions.add(new CliOption("serverPort", "TCP port to listen to in app.run").
+                defaultValue("8080"));
     }
 
     @Override