diff --git a/README.md b/README.md
index c45a9b3..1095569 100644
--- a/README.md
+++ b/README.md
@@ -23,7 +23,7 @@ redis:backup-auth <name> <aws_access_key_id> <aws_secret_access_key> (<aws_defau
 redis:backup-deauth <name>     Removes backup authentication for the redis service
 redis:backup-schedule <name> <schedule> <bucket> Schedules a backup of the redis service
 redis:backup-schedule-cat <name> Cat the contents of the configured backup cronfile for the service
-redis:backup-set-encryption <name> <encryption_key> Sets up GPG encryption for future backups of the redis service
+redis:backup-set-encryption <name> <passphrase> Set a GPG passphrase for backups
 redis:backup-unschedule <name> Unschedules the backup of the redis service
 redis:backup-unset-encryption <name> Removes backup encryption for future backups of the redis service
 redis:clone <name> <new-name>  Create container <new-name> then copy data from <name> into <new-name>
diff --git a/subcommands/backup-set-encryption b/subcommands/backup-set-encryption
index 175d716..dce3620 100755
--- a/subcommands/backup-set-encryption
+++ b/subcommands/backup-set-encryption
@@ -5,19 +5,19 @@ source "$PLUGIN_BASE_PATH/common/functions"
 source "$(dirname "$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)")/functions"
 
 service-backup-set-encryption-cmd() {
-  #E set a GPG encryption key for backups
+  #E set a GPG passphrase for backups
   #E dokku $PLUGIN_COMMAND_PREFIX:backup-set-encryption lolipop
   #A service, service to run command against
-  #A encryption-key, a GPG encryption key
+  #A passphrase, a GPG-compatible passphrase
   declare desc="sets encryption for all future backups of $PLUGIN_SERVICE service"
   local cmd="$PLUGIN_COMMAND_PREFIX:backup-set-encryption" argv=("$@"); [[ ${argv[0]} == "$cmd" ]] && shift 1
-  declare SERVICE="$1" ENCRYPTION_KEY="$2"
+  declare SERVICE="$1" PASSPHRASE="$2"
   is_implemented_command "$cmd" || dokku_log_fail "Not yet implemented"
 
   [[ -z "$SERVICE" ]] && dokku_log_fail "Please specify a name for the service"
-  [[ -z "$ENCRYPTION_KEY" ]] && dokku_log_fail "Please specify a GPG encryption key"
+  [[ -z "$PASSPHRASE" ]] && dokku_log_fail "Please specify a GPG backup passphrase"
   verify_service_name "$SERVICE"
-  service_backup_set_encryption "$SERVICE" "$ENCRYPTION_KEY"
+  service_backup_set_encryption "$SERVICE" "$PASSPHRASE"
 }
 
 service-backup-set-encryption-cmd "$@"