1 files changed, 1 insertions, 2 deletions

diff --git a/procps/iostat.c b/procps/iostat.c
index 608d41364..fbf685568 100644
--- a/procps/iostat.c
+++ b/procps/iostat.c
@@ -418,8 +418,7 @@ int iostat_main(int argc UNUSED_PARAM, char **argv)
 
         /* Parse and process arguments */
         /* -k and -m are mutually exclusive */
-        opt_complementary = "k--m:m--k";
-        opt = getopt32(argv, "cdtzkm");
+        opt = getopt32(argv, "^" "cdtzkm" "\0" "k--m:m--k");
         if (!(opt & (OPT_c + OPT_d)))
                 /* Default is -cd */
                 opt |= OPT_c + OPT_d;