diff --git a/src/main_view.rs b/src/main_view.rs
index d1af782..301d125 100644
--- a/src/main_view.rs
+++ b/src/main_view.rs
@@ -673,7 +673,7 @@ impl MainView {
         let original_shader_src = self.shader_src.clone();
         let high_accuracy_shader_src = self
             .shader_src
-            .replace("let h: f32 = 0.1;", "let h: f32 = 0.001;")
+            .replace("let h_initial: f32 = 0.1;", "let h_initial: f32 = 0.001;")
             .replace("let steps: i32 = 100;", "let steps: i32 = 5000;");
         self.reload_shader(
             device,
diff --git a/src/main_view.wgsl b/src/main_view.wgsl
index b3276a3..f23155b 100644
--- a/src/main_view.wgsl
+++ b/src/main_view.wgsl
@@ -218,7 +218,7 @@ fn ray_color(origin: vec3<f32>, direction: vec3<f32>, max_dist: f32) -> vec4<f32
     return vec4<f32>(0.0, 0.0, 0.0, 0.0);
 }
 
-let h: f32 = 0.1;
+let h_initial: f32 = 0.1;
 let steps: i32 = 5000;
 
 struct NonlinearRayColorResult {
@@ -238,7 +238,6 @@ fn nonlinear_ray_color(start_point: vec3<f32>, start_dir: vec3<f32>) -> Nonlinea
     var t: f32 = 0.0;
     var last_v: vec3<f32> = vec3<f32>(0.0, 0.0, 0.0);
     var last_diff: f32 = -1.0;
-    let h_initial = h;
     var h: f32 = h_initial;
 
     for (; t <= 5.0;) {
@@ -286,7 +285,6 @@ fn sample_rays(start_point: vec3<f32>, start_dir: vec3<f32>, samples_index: i32,
     var t: f32 = 0.0;
     var last_v: vec3<f32> = vec3<f32>(0.0, 0.0, 0.0);
     var last_diff: f32 = -1.0;
-    let h_initial = h;
     var h: f32 = h_initial;
 
     var sample: RaySample;