diff --git a/ecs/src/world.rs b/ecs/src/world.rs
index efd5172..3d0ec8f 100644
--- a/ecs/src/world.rs
+++ b/ecs/src/world.rs
@@ -211,6 +211,7 @@ impl World {
         entity: Entity,
         component: T,
     ) -> Result<()> {
+        #[cfg(debug_assertions)]
         println!("insert component {}", T::debug_name());
 
         let change = ComponentChange::Added(TypeId::of::<T>(), Box::new(component));
@@ -231,6 +232,7 @@ impl World {
         &mut self,
         entity: Entity,
     ) -> Result<()> {
+        #[cfg(debug_assertions)]
         println!("remove component {}", T::debug_name());
 
         let change = ComponentChange::Removed(TypeId::of::<T>());