diff --git a/notes/installation/Linux下JDK安装.md b/notes/installation/Linux下JDK安装.md
index 124f3b9..702556b 100644
--- a/notes/installation/Linux下JDK安装.md
+++ b/notes/installation/Linux下JDK安装.md
@@ -28,7 +28,7 @@
 export JAVA_HOME=/usr/java/jdk1.8.0_201  
 export JRE_HOME=${JAVA_HOME}/jre  
 export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib  
-export  PATH=${JAVA_HOME}/bin:$PATH
+export PATH=${JAVA_HOME}/bin:$PATH
 ```
 
 执行`source`命令，使得配置立即生效：