diff --git a/doc/nomsu.1 b/doc/nomsu.1
index 0824349..11439aa 100644
--- a/doc/nomsu.1
+++ b/doc/nomsu.1
@@ -57,6 +57,9 @@ If provided, \fBnomsu\fR will attempt to use the specified debugger to wrap the
 .B \--version
 Print the version number and exit.
 .TP
+.B \--no-core
+Disable the default behavior of running the files in 'core' before running anything else.
+.TP
 .B \--help
 Print the command line usage.
 .SH EXAMPLES