1 files changed, 4 insertions, 0 deletions
diff --git a/utils/print_manifest/print_manifest.c b/utils/print_manifest/print_manifest.c
index be24a2f0..6084f07f 100644
--- a/utils/print_manifest/print_manifest.c
+++ b/utils/print_manifest/print_manifest.c
@@ -180,6 +180,10 @@ int main (int argc, char *argv[])
   int result = 0;
   OpenSSL_add_all_algorithms();
   ERR_load_crypto_strings();
+  if (argc < 2) {
+    fprintf(stderr, "usage: %s manifest [manifest...]\n", argv[0]);
+    return 1;
+  }
   while (--argc > 0)
     result |=  read_manifest(*++argv, 0, 1, 1) == NULL;
   return result;