diff --git a/src/api/schema.rs b/src/api/schema.rs
index 2644827a..c4319260 100644
--- a/src/api/schema.rs
+++ b/src/api/schema.rs
@@ -4,6 +4,7 @@ use serde_json::{json, Value};
 use url::form_urlencoded;
 use regex::Regex;
 use std::fmt;
+use std::sync::Arc;
 
 pub type PropertyMap = HashMap<&'static str, Schema>;
 
@@ -67,7 +68,7 @@ pub struct StringSchema {
 pub struct ArraySchema {
     pub description: &'static str,
     pub optional: bool,
-    pub items: Box<Schema>,
+    pub items: Arc<Schema>,
 }
 
 #[derive(Debug)]
@@ -75,7 +76,7 @@ pub struct ObjectSchema {
     pub description: &'static str,
     pub optional: bool,
     pub additional_properties: bool,
-    pub properties: HashMap<&'static str, Schema>,
+    pub properties: HashMap<&'static str, Arc<Schema>>,
 }
 
 #[derive(Debug)]
@@ -130,7 +131,7 @@ pub enum ApiStringFormat {
     None,
     Enum(Vec<String>),
     Pattern(Box<Regex>),
-    Complex(Box<Schema>),
+    Complex(Arc<Schema>),
 }
 
 #[macro_export]
@@ -148,7 +149,7 @@ macro_rules! parameter {
             description: "",
             optional: false,
             additional_properties: false,
-            properties: HashMap::<&'static str, Schema>::new(),
+            properties: HashMap::<&'static str, Arc<Schema>>::new(),
         }
     }};
     ($($name:ident => $e:expr),*) => {{
@@ -157,7 +158,7 @@ macro_rules! parameter {
             optional: false,
             additional_properties: false,
             properties: {
-                let mut map = HashMap::<&'static str, Schema>::new();
+                let mut map = HashMap::<&'static str, Arc<Schema>>::new();
                 $(
                     map.insert(stringify!($name), $e);
                 )*
@@ -255,7 +256,7 @@ pub fn parse_parameter_strings(data: &Vec<(String, String)>, schema: &ObjectSche
 
     for (key, value) in data {
         if let Some(prop_schema) = properties.get::<str>(key) {
-            match prop_schema {
+            match prop_schema.as_ref() {
                 Schema::Array(array_schema) => {
                     if params[key] == Value::Null {
                         params[key] = json!([]);
@@ -306,7 +307,7 @@ pub fn parse_parameter_strings(data: &Vec<(String, String)>, schema: &ObjectSche
 
     if test_required && errors.len() == 0 {
         for (name, prop_schema) in properties {
-            let optional = match prop_schema {
+            let optional = match prop_schema.as_ref() {
                 Schema::Boolean(boolean_schema) => boolean_schema.optional,
                 Schema::Integer(integer_schema) => integer_schema.optional,
                 Schema::String(string_schema) => string_schema.optional,
@@ -354,24 +355,24 @@ fn test_schema1() {
 #[test]
 fn test_query_string() {
 
-    let schema = parameter!{name => ApiString!{ optional => false }};
+    let schema = parameter!{name => Arc::new(ApiString!{ optional => false })};
 
     let res = parse_query_string("", &schema, true);
     assert!(res.is_err());
 
-    let schema = parameter!{name => ApiString!{ optional => true }};
+    let schema = parameter!{name => Arc::new(ApiString!{ optional => true })};
 
     let res = parse_query_string("", &schema, true);
     assert!(res.is_ok());
 
     // TEST min_length and max_length
 
-    let schema = parameter!{name => ApiString!{
+    let schema = parameter!{name => Arc::new(ApiString!{
         optional => false,
         min_length => Some(5),
         max_length => Some(10)
 
-    }};
+    })};
 
     let res = parse_query_string("name=abcd", &schema, true);
     assert!(res.is_err());
@@ -387,10 +388,10 @@ fn test_query_string() {
 
     // TEST regex pattern
 
-    let schema = parameter!{name => ApiString!{
+    let schema = parameter!{name => Arc::new(ApiString!{
         optional => false,
         format => ApiStringFormat::Pattern(Box::new(Regex::new("test").unwrap()))
-    }};
+    })};
 
     let res = parse_query_string("name=abcd", &schema, true);
     assert!(res.is_err());
@@ -398,10 +399,10 @@ fn test_query_string() {
     let res = parse_query_string("name=ateststring", &schema, true);
     assert!(res.is_ok());
 
-    let schema = parameter!{name => ApiString!{
+    let schema = parameter!{name => Arc::new(ApiString!{
         optional => false,
         format => ApiStringFormat::Pattern(Box::new(Regex::new("^test$").unwrap()))
-    }};
+    })};
 
     let res = parse_query_string("name=ateststring", &schema, true);
     assert!(res.is_err());
@@ -411,10 +412,10 @@ fn test_query_string() {
 
     // TEST string enums
 
-    let schema = parameter!{name => ApiString!{
+    let schema = parameter!{name => Arc::new(ApiString!{
         optional => false,
         format => ApiStringFormat::Enum(vec!["ev1".into(), "ev2".into()])
-    }};
+    })};
 
     let res = parse_query_string("name=noenum", &schema, true);
     assert!(res.is_err());
@@ -433,16 +434,16 @@ fn test_query_string() {
 #[test]
 fn test_query_integer() {
 
-    let schema = parameter!{count => Integer!{ optional => false }};
+    let schema = parameter!{count => Arc::new(Integer!{ optional => false })};
 
     let res = parse_query_string("", &schema, true);
     assert!(res.is_err());
 
-    let schema = parameter!{count => Integer!{
+    let schema = parameter!{count => Arc::new(Integer!{
         optional => true,
         minimum => Some(-3),
         maximum => Some(50)
-    }};
+    })};
 
     let res = parse_query_string("", &schema, true);
     assert!(res.is_ok());
@@ -472,12 +473,12 @@ fn test_query_integer() {
 #[test]
 fn test_query_boolean() {
 
-    let schema = parameter!{force => Boolean!{ optional => false }};
+    let schema = parameter!{force => Arc::new(Boolean!{ optional => false })};
 
     let res = parse_query_string("", &schema, true);
     assert!(res.is_err());
 
-    let schema = parameter!{force => Boolean!{ optional => true }};
+    let schema = parameter!{force => Arc::new(Boolean!{ optional => true })};
 
     let res = parse_query_string("", &schema, true);
     assert!(res.is_ok());
diff --git a/src/api3.rs b/src/api3.rs
index 9c5fec07..abc97134 100644
--- a/src/api3.rs
+++ b/src/api3.rs
@@ -1,5 +1,6 @@
 use failure::*;
 use std::collections::HashMap;
+use std::sync::Arc;
 
 
 use crate::api::schema::*;
@@ -44,10 +45,10 @@ pub fn router() -> Router {
             handler: test_sync_api_handler,
             description: "This is a simple test.",
             parameters: parameter!{
-                force => Boolean!{
+                force => Arc::new(Boolean!{
                     optional => true,
                     description => "Test for boolean options."
-                }
+                })
             },
             returns: Schema::Null,
         })
diff --git a/src/getopts.rs b/src/getopts.rs
index fe3e844e..0628f581 100644
--- a/src/getopts.rs
+++ b/src/getopts.rs
@@ -2,6 +2,8 @@ use crate::api::schema::*;
 
 use failure::*;
 use std::collections::HashMap;
+use std::sync::Arc;
+
 use serde_json::{json, Value};
 
 #[derive(Debug)]
@@ -71,16 +73,18 @@ pub fn parse_arguments(
                 RawArgument::Option { name, value } => {
                     match value {
                         None => {
-                            let param_schema = properties.get::<str>(&name);
-                            let (want_bool, can_default) = match param_schema {
-                                Some(Schema::Boolean(boolean_schema)) => {
+                            let mut want_bool = false;
+                            let mut can_default = false;
+                            if let Some(param_schema) = properties.get::<str>(&name) {
+                                if let Schema::Boolean(boolean_schema) = param_schema.as_ref() {
+                                    want_bool = true;
                                     if let Some(default) = boolean_schema.default {
-                                        if default == true { (true, false); }
+                                        if default == false { can_default = true; }
+                                    } else {
+                                        can_default = true;
                                     }
-                                    (true, true)
                                 }
-                                _ => (false, false),
-                            };
+                            }
 
                             let mut next_is_argument = false;
                             let mut next_is_bool = false;
@@ -152,7 +156,7 @@ pub fn parse_arguments(
 #[test]
 fn test_boolean_arg() {
 
-    let schema = parameter!{enable => Boolean!{ optional => false }};
+    let schema = parameter!{enable => Arc::new(Boolean!{ optional => false })};
 
     let mut variants: Vec<(Vec<&str>, bool)> = vec![];
     variants.push((vec!["-enable"], true));
@@ -183,8 +187,8 @@ fn test_boolean_arg() {
 fn test_argument_paramenter() {
 
     let schema = parameter!{
-        enable => Boolean!{ optional => false },
-        storage => ApiString!{ optional => false }
+        enable => Arc::new(Boolean!{ optional => false }),
+        storage => Arc::new(ApiString!{ optional => false })
     };
 
     let args = vec!["-enable", "local"];
diff --git a/src/main.rs b/src/main.rs
index 58af18ac..9c97bfde 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -2,6 +2,7 @@
 extern crate apitest;
 
 use std::collections::HashMap;
+use std::sync::Arc;
 
 use apitest::api::schema::*;
 use apitest::api::router::*;
@@ -20,7 +21,7 @@ fn main() {
     println!("Proxmox REST Server example.");
 
     let schema = parameter!{
-        name => ApiString!{ optional => true }
+        name => Arc::new(ApiString!{ optional => true })
     };
 
     let args: Vec<String> = std::env::args().skip(1).collect();