diff --git a/docker/entrypoint.sh b/docker/entrypoint.sh
index 821967ae4..6310e3337 100755
--- a/docker/entrypoint.sh
+++ b/docker/entrypoint.sh
@@ -37,7 +37,7 @@ case "$1" in
 	;;
 
   's3')
-  	ARGS="-domainName='$S3_DOMAIN_NAME' -key.file='$S3_KEY_FILE' -cert.file='$S3_CERT_FILE'"
+  	ARGS="-domainName=$S3_DOMAIN_NAME -key.file=$S3_KEY_FILE -cert.file=$S3_CERT_FILE"
   	if [ -n "$FILER_PORT_8888_TCP_ADDR" ] ; then
 		ARGS="$ARGS -filer=$FILER_PORT_8888_TCP_ADDR:$FILER_PORT_8888_TCP_PORT"
 	fi