diff --git a/bin/xen-create-image b/bin/xen-create-image
index 2d703cd..65405ef 100755
--- a/bin/xen-create-image
+++ b/bin/xen-create-image
@@ -1593,6 +1593,7 @@ sub parseCommandLineArguments
             "pygrub",       \$CONFIG{ 'pygrub' },
             "passwd",       \$CONFIG{ 'passwd' },
             "genpass=i",    \$CONFIG{ 'genpass' },
+            "genpass-len=i", \$CONFIG{ 'genpass_len' },
             "genpass_len=i", \$CONFIG{ 'genpass_len' },
             "password=s",   \$CONFIG{ 'password' },
             "partitions=s", \$CONFIG{ 'partitions' },