diff --git a/README.md b/README.md
index 603dd48..85738a1 100755
--- a/README.md
+++ b/README.md
@@ -7,9 +7,7 @@ CrossFuzz: Cross-Contract Fuzzing for Smart Contract Vulnerability Detection.
 * Install env and dependencies, follow the instructions below:
 
 ```shell
-sudo apt install python3.8 python3-distutils python3-dev gcc docker.io
-sudo groupadd docker
-sudo usermod -aG docker ${USER}
+sudo apt install python3.8 python3-distutils python3-dev gcc
 pip install -r requirements.txt
 solc-select install 0.4.26
 solc-select use 0.4.26
@@ -20,7 +18,7 @@ solc-select use 0.4.26
 
 ### Usage
 
-* config `CrossFuzz.py`, you can run a simple when you first run it. Follow the code below and run `test_run()`
+* Config `CrossFuzz.py`, you can run a simple when you first run it. Follow the code below and run `test_run()`
   function. This demo will run a simple fuzzer on `examples/T.sol` and generate test cases in `fuzzer/result/res.json`
   directory.
 
@@ -131,7 +129,7 @@ if __name__ == "__main__":
 ```
 
 * Suppose the smart contract file you want to test is `examples/T.sol`, the name of the contract under tested is `E`,
-  the version of solc compiler is `0.4.26`, the max length of transaction sequence is `5`, fuzz time is `60` second.
+  the version of solc compiler is `0.4.26`, the max length of transaction sequence is `5`, fuzz time is `60` second and the binary path of solc compiler is `/usr/local/bin/solc`.
   Then you can run the following command to test
   it:
 
@@ -144,4 +142,4 @@ python CrossFuzz.py examples/T.sol E 0.4.26 5 60 ./res.json /usr/local/bin/solc
 ### Links and copyright
 
 * This repo is based on [ConFuzzius](https://github.com/christoftorres/ConFuzzius). `ConFuzzius` is licensed under the
-  MIT License - see the `LICENSE` file for details.
\ No newline at end of file
+  MIT License - see the `LICENSE` file for details.