diff --git a/ubuntu-java-home.sh b/ubuntu-java-home.sh
index f79ec5f..9e0c46e 100644
--- a/ubuntu-java-home.sh
+++ b/ubuntu-java-home.sh
@@ -1,3 +1,4 @@
+#!/bin/bash
 echo "export JAVA_HOME=/usr/local/jdk1.8.0_202" | tee -a /etc/profile
 echo "export PATH=$PATH:/usr/local/jdk1.8.0_202/bin" | tee -a /etc/profile
 source /etc/profile