diff --git a/drivers/display/display_gc9x01x.c b/drivers/display/display_gc9x01x.c
index 4ff5e990f07e..7a3ca1ea12eb 100644
--- a/drivers/display/display_gc9x01x.c
+++ b/drivers/display/display_gc9x01x.c
@@ -530,7 +530,7 @@ static int gc9x01x_write(const struct device *dev, const uint16_t x, const uint1
 		write_h = 1U;
 		nbr_of_writes = desc->height;
 		mipi_desc.height = 1;
-		mipi_desc.buf_size = desc->pitch * data->bytes_per_pixel;
+		mipi_desc.buf_size = desc->width * data->bytes_per_pixel;
 	} else {
 		write_h = desc->height;
 		mipi_desc.height = desc->height;