diff --git a/src/birdoids/mod.rs b/src/birdoids/mod.rs
index a530c203..5b84965c 100644
--- a/src/birdoids/mod.rs
+++ b/src/birdoids/mod.rs
@@ -256,7 +256,8 @@ fn alignment(
             continue;
         };
 
-        force.0 = (avg.extend(0.0) - force.0) * ALIGNMENT_FACTOR;
+        let boid_vel = boid_velocities.get(this_entt).unwrap();
+        force.0 += (avg.extend(0.0) - boid_vel.0) * ALIGNMENT_FACTOR;
     }
 }