diff --git a/admin_tools/download_hadoop.sh b/admin_tools/download_hadoop.sh
index 892b4d6b18..6fd101eb9b 100755
--- a/admin_tools/download_hadoop.sh
+++ b/admin_tools/download_hadoop.sh
@@ -24,6 +24,7 @@ CWD=$(cd "$(dirname "$0")" && pwd)
 if [ $# -lt 1 ]; then
     echo "Invalid arguments !"
     echo "USAGE: $0 <HADOOP_BIN_PATH>"
+    exit 1
 fi
 
 HADOOP_BIN_PATH=$1
diff --git a/admin_tools/download_zk.sh b/admin_tools/download_zk.sh
index 7f0823c74c..481c488d73 100755
--- a/admin_tools/download_zk.sh
+++ b/admin_tools/download_zk.sh
@@ -24,6 +24,7 @@ CWD=$(cd $(dirname $0) && pwd)
 if [ $# -lt 1 ]; then
     echo "Invalid arguments !"
     echo "USAGE: $0 <ZOOKEEPER_BIN_PATH>"
+    exit 1
 fi
 
 ZOOKEEPER_BIN_PATH=$1