diff --git a/util/nvmutil/nvmutil.c b/util/nvmutil/nvmutil.c
index 1bef8850..57b223e4 100644
--- a/util/nvmutil/nvmutil.c
+++ b/util/nvmutil/nvmutil.c
@@ -2151,7 +2151,7 @@ io_args(int fd, void *mem, size_t nrw,
 	if (fd < 0)
 		goto err_io_args;
 
-	/* prevent underflow */
+	/* prevent signed negative check */
 	if (off < 0)
 		goto err_io_args;