diff --git a/source/chapter0/1setup-devel-env.rst b/source/chapter0/1setup-devel-env.rst
index 428ff64..ee8d05a 100644
--- a/source/chapter0/1setup-devel-env.rst
+++ b/source/chapter0/1setup-devel-env.rst
@@ -195,9 +195,9 @@ Qemu 模拟器安装
 .. code-block:: bash
 
    # 注意 $HOME 是 Linux 自动设置的表示你家目录的环境变量，你也可以根据实际位置灵活调整
-   export "PATH=$HOME/Downloads/built/qemu-5.0.0:$PATH"
-   export "PATH=$HOME/Downloads/built/qemu-5.0.0/riscv64-softmmu:$PATH"
-   export "PATH=$HOME/Downloads/built/qemu-5.0.0/riscv64-linux-user:$PATH"
+   export PATH="$HOME/Downloads/built/qemu-5.0.0:$PATH"
+   export PATH="$HOME/Downloads/built/qemu-5.0.0/riscv64-softmmu:$PATH"
+   export PATH="$HOME/Downloads/built/qemu-5.0.0/riscv64-linux-user:$PATH"
 
 随后即可在当前终端 ``source ~/.bashrc`` 更新系统路径，或者直接重启一个新的终端。