1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/isdn/i4l/isdn_ttyfax.c b/drivers/isdn/i4l/isdn_ttyfax.c
index a943d078bacc..f93de4a30355 100644
--- a/drivers/isdn/i4l/isdn_ttyfax.c
+++ b/drivers/isdn/i4l/isdn_ttyfax.c
@@ -834,7 +834,7 @@ isdn_tty_cmd_FCLASS2(char **p, modem_info * info)
                 char *rp = &f->resolution;
 
                 p[0] += 2;
-                if (!info->faxonline & 1)       /* not outgoing connection */
+                if (!(info->faxonline & 1))     /* not outgoing connection */
                         PARSE_ERROR1;
 
                 for (i = 0; (((*p[0] >= '0') && (*p[0] <= '9')) || (*p[0] == ',')) && (i < 4); i++) {