1 files changed, 2 insertions, 2 deletions

diff --git a/tools/idevicediagnostics.c b/tools/idevicediagnostics.c
index 66e192f..8c32854 100644
--- a/tools/idevicediagnostics.c
+++ b/tools/idevicediagnostics.c
@@ -79,7 +79,7 @@ int main(int argc, char **argv)
                 }
                 else if (!strcmp(argv[i], "-u") || !strcmp(argv[i], "--udid")) {
                         i++;
-                        if (!argv[i] || (strlen(argv[i]) != 40)) {
+                        if (!argv[i] || !*argv[i]) {
                                 print_usage(argc, argv);
                                 result = 0;
                                 goto cleanup;
@@ -318,7 +318,7 @@ void print_usage(int argc, char **argv)
         printf("  sleep\t\t\t\tput device into sleep mode (disconnects from host)\n\n");
         printf(" The following OPTIONS are accepted:\n");
         printf("  -d, --debug\t\tenable communication debugging\n");
-        printf("  -u, --udid UDID\ttarget specific device by its 40-digit device UDID\n");
+        printf("  -u, --udid UDID\ttarget specific device by UDID\n");
         printf("  -h, --help\t\tprints usage information\n");
         printf("\n");
         printf("Homepage: <" PACKAGE_URL ">\n");