diff --git a/src/rust/nehe/matrix.rs b/src/rust/nehe/matrix.rs
index 610381c..967ebe4 100644
--- a/src/rust/nehe/matrix.rs
+++ b/src/rust/nehe/matrix.rs
@@ -132,9 +132,9 @@ impl Mtx
 		self.0[11] = r[6] * tmp[3] + r[7] * tmp[7] + r[8] * tmp[11];
 	}
 
-    #[inline(always)]
-    #[must_use]
-    pub const fn as_ptr(&self) -> *const f32 { self.0.as_ptr() }
+	#[inline(always)]
+	#[must_use]
+	pub const fn as_ptr(&self) -> *const f32 { self.0.as_ptr() }
 }
 
 impl Default for Mtx
diff --git a/src/shaders/lesson7.metal b/src/shaders/lesson7.metal
index a680ad4..2b828ed 100644
--- a/src/shaders/lesson7.metal
+++ b/src/shaders/lesson7.metal
@@ -21,9 +21,9 @@ struct VertexUniform
 
 struct Light
 {
-    float4 ambient;
-    float4 diffuse;
-    float4 position;
+	float4 ambient;
+	float4 diffuse;
+	float4 position;
 };
 
 struct Vertex2Fragment
@@ -38,16 +38,16 @@ vertex Vertex2Fragment VertexMain(
 	constant VertexUniform& u [[buffer(0)]],
 	constant Light& light [[buffer(1)]])
 {
-    const auto position = u.modelView * float4(in.position, 1.0);
-    const auto normal = metal::normalize(u.modelView * float4(in.normal, 0.0)).xyz;
+	const auto position = u.modelView * float4(in.position, 1.0);
+	const auto normal = metal::normalize(u.modelView * float4(in.normal, 0.0)).xyz;
 
-    const auto lightVec = light.position.xyz - position.xyz;
-    const auto lightDist2 = metal::length_squared(lightVec);
-    const auto dir = metal::rsqrt(lightDist2) * lightVec;
-    const auto lambert = metal::max(0.0, metal::dot(normal, dir));
+	const auto lightVec = light.position.xyz - position.xyz;
+	const auto lightDist2 = metal::length_squared(lightVec);
+	const auto dir = metal::rsqrt(lightDist2) * lightVec;
+	const auto lambert = metal::max(0.0, metal::dot(normal, dir));
 
-    const auto ambient = 0.04 + 0.2 * half3(light.ambient.rgb);
-    const auto diffuse = 0.8 * half3(light.diffuse.rgb);
+	const auto ambient = 0.04 + 0.2 * half3(light.ambient.rgb);
+	const auto diffuse = 0.8 * half3(light.diffuse.rgb);
 
 	Vertex2Fragment out;
 	out.position = u.projection * position;
@@ -57,7 +57,7 @@ vertex Vertex2Fragment VertexMain(
 }
 
 fragment half4 FragmentMain(
-    Vertex2Fragment in [[stage_in]],
+	Vertex2Fragment in [[stage_in]],
 	metal::texture2d<half, metal::access::sample> texture [[texture(0)]],
 	metal::sampler sampler [[sampler(0)]])
 {
diff --git a/src/shaders/lesson9.metal b/src/shaders/lesson9.metal
index 6a2130f..dee120d 100644
--- a/src/shaders/lesson9.metal
+++ b/src/shaders/lesson9.metal
@@ -44,7 +44,7 @@ vertex Vertex2Fragment VertexMain(
 }
 
 fragment half4 FragmentMain(
-    Vertex2Fragment in [[stage_in]],
+	Vertex2Fragment in [[stage_in]],
 	metal::texture2d<half, metal::access::sample> texture [[texture(0)]],
 	metal::sampler sampler [[sampler(0)]])
 {