1 files changed, 1 insertions, 1 deletions

diff --git a/utils/kmstest.cpp b/utils/kmstest.cpp
index e412f90..34fb352 100644
--- a/utils/kmstest.cpp
+++ b/utils/kmstest.cpp
@@ -363,7 +363,7 @@ static const char* usage_str =
                 "      --flip[=max]          Do page flipping for each output with an optional maximum flips count\n"
                 "      --sync                Synchronize page flipping\n"
                 "\n"
-                "<connector>, <crtc> and <plane> can be given by index (<idx>) or id (<id>).\n"
+                "<connector>, <crtc> and <plane> can be given by index (<idx>) or id (@<id>).\n"
                 "<connector> can also be given by name.\n"
                 "\n"
                 "Options can be given multiple times to set up multiple displays or planes.\n"