1 files changed, 3 insertions, 3 deletions
diff --git a/src/handler/partial.rs b/src/handler/partial.rs
index a52fa59..a552096 100644
--- a/src/handler/partial.rs
+++ b/src/handler/partial.rs
@@ -2,11 +2,11 @@ use crate::context::RouteContext;
 
 #[allow(clippy::module_name_repetitions)]
 pub trait Partial: Send + Sync {
-  fn call(&mut self, context: &RouteContext) -> String;
+  fn call(&self, context: &RouteContext) -> String;
 }
 
 impl<T> Partial for T
-where T: FnMut(&RouteContext) -> String + Send + Sync
+where T: Fn(&RouteContext) -> String + Send + Sync
 {
-  fn call(&mut self, context: &RouteContext) -> String { (*self)(context) }
+  fn call(&self, context: &RouteContext) -> String { (*self)(context) }
 }