diff --git a/tests/run-sign.c b/tests/run-sign.c
index 55b2e482..37211d72 100644
--- a/tests/run-sign.c
+++ b/tests/run-sign.c
@@ -86,6 +86,7 @@ show_usage (int ex)
          "  --key NAME       use key NAME for signing\n"
          "  --sender MBOX    use MBOX as sender address\n"
          "  --include-key-block  use this option with gpg\n"
+         "  --clear          create a clear text signature\n"
          , stderr);
   exit (ex);
 }
@@ -172,6 +173,11 @@ main (int argc, char **argv)
           include_key_block = 1;
           argc--; argv++;
         }
+      else if (!strcmp (*argv, "--clear"))
+        {
+          sigmode = GPGME_SIG_MODE_CLEAR;
+          argc--; argv++;
+        }
       else if (!strncmp (*argv, "--", 2))
         show_usage (1);