diff --git a/src/main.c b/src/main.c
index d8afa2d..ab3a196 100644
--- a/src/main.c
+++ b/src/main.c
@@ -384,7 +384,7 @@ int main(int argc, char **argv) {
                                 use_can = 1;
                                 break;
                         case 'h' :
-                                printf("Usage: ./cocomobile-tui [-d int DELAY by how much to slow down] [-h HELP] [-f generate fake data] [-c enable can]\n");
+                                printf("Usage: ./cocomobile-tui [-d int <ms multiplier>] [-h <help>] [-f <random data generation>] [-c <enable can>]\n");
                                 return(0);
                 }
         }