diff --git a/src/api/router.rs b/src/api/router.rs
index d0e475da..c86c8273 100644
--- a/src/api/router.rs
+++ b/src/api/router.rs
@@ -8,7 +8,7 @@ pub struct ApiMethod {
     pub description: &'static str,
     pub parameters: Schema,
     pub returns: Schema,
-    pub handler: fn(Value, &ApiMethod) -> Result<Value, Error>,
+    pub handler: Box<Fn(Value, &ApiMethod) -> Result<Value, Error> + Send + Sync>,
 }
 
 pub enum SubRoute {
diff --git a/src/api/server.rs b/src/api/server.rs
index 889c3a92..c8162995 100644
--- a/src/api/server.rs
+++ b/src/api/server.rs
@@ -173,7 +173,7 @@ fn handle_sync_api_request(
             tokio::spawn(task);
              */
 
-            let res = (info.handler)(params, info)?;
+            let res = (*info.handler)(params, info)?;
 
             Ok(res)
 
diff --git a/src/api3.rs b/src/api3.rs
index 752793a2..805e3414 100644
--- a/src/api3.rs
+++ b/src/api3.rs
@@ -25,25 +25,23 @@ fn test_sync_api_handler(param: Value, _info: &ApiMethod) -> Result<Value, Error
 }
 
 
-fn test_subdir_api_handler(param: Value, _info: &ApiMethod) -> Result<Value, Error> {
-    println!("This is a subdir {}", param);
-
-    Ok(json!(null))
-}
-
 pub fn router() -> Router {
 
     let route3 = Router::new()
         .get(ApiMethod {
-            handler: test_subdir_api_handler,
             description: "Another Endpoint.",
             parameters: parameter!{},
             returns: Schema::Null,
+            handler: Box::new(|param, _info| {
+                println!("This is a clousure handler: {}", param);
+
+                Ok(json!(null))
+           })
         });
 
     let route2 = Router::new()
         .get(ApiMethod {
-            handler: test_sync_api_handler,
+            handler: Box::new(test_sync_api_handler),
             description: "This is a simple test.",
             parameters: parameter!{
                 force => Boolean!{