diff --git a/commands/nand-bitflip.c b/commands/nand-bitflip.c
index a8a97c1..cfde2f4 100644
--- a/commands/nand-bitflip.c
+++ b/commands/nand-bitflip.c
@@ -107,6 +107,7 @@
 BAREBOX_CMD_HELP_TEXT("This command creates bitflips on Nand pages.")
 BAREBOX_CMD_HELP_TEXT("Options:")
 BAREBOX_CMD_HELP_OPT ("-b <block>",  "block to work on")
+BAREBOX_CMD_HELP_OPT ("-c\t",  "Check only for bitflips")
 BAREBOX_CMD_HELP_OPT ("-o <offset>",  "offset in Nand")
 BAREBOX_CMD_HELP_OPT ("-r\t",  "flip random bits")
 BAREBOX_CMD_HELP_OPT ("-n <numbitflips>",  "Specify maximum number of bitflips to generate")