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-rw-r--r--backend/mustek.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/backend/mustek.c b/backend/mustek.c
index eafdb99..6a9aa86 100644
--- a/backend/mustek.c
+++ b/backend/mustek.c
@@ -4433,7 +4433,7 @@ init_options (Mustek_Scanner * s)
s->opt[OPT_BRIGHTNESS].unit = SANE_UNIT_PERCENT;
s->opt[OPT_BRIGHTNESS].constraint_type = SANE_CONSTRAINT_RANGE;
s->opt[OPT_BRIGHTNESS].constraint.range = &percentage_range;
- if (!s->hw->flags & MUSTEK_FLAG_THREE_PASS)
+ if (!(s->hw->flags & MUSTEK_FLAG_THREE_PASS))
/* 1-pass scanners don't support brightness in multibit mode */
s->opt[OPT_BRIGHTNESS].cap |= SANE_CAP_INACTIVE;
s->val[OPT_BRIGHTNESS].w = 0;