diff --git a/install.md b/install.md
index b7293c788c..0e4701f6cf 100644
--- a/install.md
+++ b/install.md
@@ -77,7 +77,7 @@ $ ./stop_server.sh
 
 With this dockerfile, you should be able to compile Milvus on any Linux platform that run Docker. To build a GPU supported Milvus, you neeed to install [NVIDIA Docker](https://github.com/NVIDIA/nvidia-docker/) first.
 
-#### Step 1 Pull Milvus Docker images
+### Step 1 Pull Milvus Docker images
 
 Pull CPU-only image:
 
@@ -90,7 +90,7 @@ Pull GPU-enabled image:
 ```shell
 $ Docker pull milvusdb/milvus-gpu-build-env:v0.6.0-ubuntu18.04
 ```
-#### Step 2 Start the Docker container
+### Step 2 Start the Docker container
 
 Start a CPU-only container:
 
@@ -108,7 +108,7 @@ To enter the container:
 ```shell
 $ Docker exec -it [container_id] bash
 ```
-#### Step 3 Download Milvus source code
+### Step 3 Download Milvus source code
 
 Download Milvus source code:
 
@@ -130,7 +130,7 @@ The source code is extracted into a folder called `milvus-0.6.0`. To enter its c
 ```shell
 $ cd ./milvus-0.6.0/core
 ```
-#### Step 4 Compile Milvus in the container
+### Step 4 Compile Milvus in the container
 
 If you are using a CPU-only image, compile it like this:
 ```shell