diff --git a/duplicity-backup.sh b/duplicity-backup.sh
index 6fde6aa..c3fc583 100755
--- a/duplicity-backup.sh
+++ b/duplicity-backup.sh
@@ -198,9 +198,9 @@ fi
 check_variables ()
 {
   if [[ ${ROOT} = "" || ${DEST} = "" || ${INCLIST} = "" || \
-         ${GPG_ENC_KEY} = "foobar_gpg_key" || \
+         ( ${ENCRYPTION} = "yes" && (${GPG_ENC_KEY} = "foobar_gpg_key" || \
          ${GPG_SIGN_KEY} = "foobar_gpg_key" || \
-         ${PASSPHRASE} = "foobar_gpg_passphrase" || \
+         ${PASSPHRASE} = "foobar_gpg_passphrase")) || \
          ${LOGDIR} = "/home/foobar_user_name/logs/test2/" || \
          ( ${DEST_IS_S3} = true && ${AWS_ACCESS_KEY_ID} = "foobar_aws_key_id" ) || \
          ( ${DEST_IS_S3} = true && ${AWS_SECRET_ACCESS_KEY} = "foobar_aws_access_key" ) ]]; then