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-rw-r--r--examples/gamma-control.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/examples/gamma-control.c b/examples/gamma-control.c
index e2af9cdd..a060b883 100644
--- a/examples/gamma-control.c
+++ b/examples/gamma-control.c
@@ -115,7 +115,7 @@ static void fill_gamma_table(uint16_t *table, uint32_t ramp_size,
uint16_t *b = table + 2 * ramp_size;
for (uint32_t i = 0; i < ramp_size; ++i) {
double val = (double)i / (ramp_size - 1);
- val = contrast * pow(val, 1.0 / gamma) + (1 - brightness);
+ val = contrast * pow(val, 1.0 / gamma) + (brightness - 1);
if (val > 1.0) {
val = 1.0;
} else if (val < 0.0) {