diff --git a/ecs/src/resources.rs b/ecs/src/resources.rs
index 1dc7b9c..d441efc 100644
--- a/ecs/src/resources.rs
+++ b/ecs/src/resources.rs
@@ -76,10 +76,6 @@ impl Resources {
             .flatten()
     }
 
-    pub fn get_mut<T: Resource>(&mut self) -> &mut T {
-        self.get_mut_opt::<T>().unwrap()
-    }
-
     pub fn get_mut_by_type_id<T: Resource>(&mut self, type_id: TypeId) -> &mut T {
         self.get_mut_opt_by_type_id(type_id).unwrap()
     }
@@ -89,7 +85,7 @@ impl Resources {
     }
 
     pub fn get_mut_unchecked<'a, T: Resource>(&mut self) -> &'a mut T {
-        unsafe { remove_life_time_mut(self.get_mut::<T>()) }
+        unsafe { remove_life_time_mut(GetDisjointMut::<'_, &'_ mut T>::get_mut(self).unwrap()) }
     }
 
     pub fn get_mut_opt<T: Resource>(&mut self) -> Option<&mut T> {