diff --git a/README.md b/README.md
index ba0d15404fb9cea675e0e7190e4cf3b514bce92d..63463a8fe1005fa8bdec490fd06df0c23863ba7b 100644
--- a/README.md
+++ b/README.md
@@ -33,10 +33,7 @@ export CA_FILE_PATH=$TEMP_PATH/ca.crt.pem
 echo download ca from $CA_RAW_URL to $CA_FILE_PATH
 wget $CA_RAW_URL -O $CA_FILE_PATH
 echo check downloaded ca
-if [[ -f $CA_FILE_PATH ]]
-then
-    echo $CA_FILE_PATH exists.
-fi
+[ -f $CA_FILE_PATH ] && echo "File exist" || echo "File does not exist"
 echo add ca to the certificate store
 sudo cp $CA_FILE_PATH /usr/local/share/ca-certificates/ca.crt.crt
 sudo update-ca-certificates