diff --git a/01-introduction-to-metal/README.md b/01-introduction-to-metal/README.md
index 87926fe..53113b1 100644
--- a/01-introduction-to-metal/README.md
+++ b/01-introduction-to-metal/README.md
@@ -4,7 +4,7 @@ As I read this book, I summarize what I think is wrong. If you think my comments
 
 ## The pipeline state
 
-When this book creates a pipeline state, they manually set the output pixel format like below.
+* When this book creates a pipeline state, they manually set the output pixel format like below.
 
 ```
 pipelineDescriptor.colorAttachments[0].pixelFormat = .bgra8Unorm
diff --git a/02-3d-models/README.md b/02-3d-models/README.md
index 3b712e0..bbba94c 100644
--- a/02-3d-models/README.md
+++ b/02-3d-models/README.md
@@ -4,11 +4,11 @@ As I read this book, I summarize what I think is wrong. If you think my comments
 
 ## Metal coordinate system
 
-The book doesn't mention that The Metal NDC(Normalized Device Coordinate) system is the left-hand coordinate system.
+* The book doesn't mention that The Metal NDC(Normalized Device Coordinate) system is the left-hand coordinate system.
 
 ![](https://upload.wikimedia.org/wikipedia/commons/b/b2/3D_Cartesian_Coodinate_Handedness.jpg)
 
-To show the train, this book modified the model file itself. It's not bad but I believe that the model file should be remained to original. Instead of changing y position to -1, we can modify the vertex shader code like below and get the same result.
+* To show the train, this book modified the model file itself. It's not bad but I believe that the model file should be remained to original. Instead of changing y position to -1, we can modify the vertex shader code like below and get the same result.
 
 ```
 vertex float4 vertex_main(const VertexIn vertex_in [[ stage_in ]]) {