diff --git a/tank-rust/src/dqn/feature.rs b/tank-rust/src/dqn/feature.rs
index ea6acca..b4a2279 100644
--- a/tank-rust/src/dqn/feature.rs
+++ b/tank-rust/src/dqn/feature.rs
@@ -124,7 +124,7 @@ impl<'a> Info<'a> {
         let angle = self.player.get_angle();
         let gun_angle = self.player.get_gun_angle();
 
-        let feature=[
+        [
             normalize_angle(target.angle - angle).tanh(),
             (wall.distance - target.distance).tanh(),
             (self.player.power as f32).tanh(),
@@ -132,11 +132,7 @@ impl<'a> Info<'a> {
             (emeny.distance + 1.0).log2(),
             normalize_angle(emeny.angle - gun_angle).tanh(),
             normalize_angle(wall.angle - gun_angle).tanh(),
-        ];
-        for f in feature.iter() {
-            assert!(!f.is_nan(),"feature is nan: {:?}", feature);
-        }
-        feature
+        ]
     }
     pub fn into_feature_tensor<B: Backend>(&self, device: &B::Device) -> Tensor<B, 1> {
         let feature = self.into_feature();