diff --git a/drivers/spi/spi_bitbang.c b/drivers/spi/spi_bitbang.c
index 137f63b89b0e23c..cce0dd1d0faa241 100644
--- a/drivers/spi/spi_bitbang.c
+++ b/drivers/spi/spi_bitbang.c
@@ -36,7 +36,7 @@ static int spi_bitbang_configure(const struct spi_bitbang_config *info,
 		return -ENOTSUP;
 	}
 
-	if (config->operation & (SPI_LINES_DUAL | SPI_LINES_QUAD)) {
+	if (config->operation & (SPI_LINES_DUAL | SPI_LINES_QUAD | SPI_LINES_OCTAL)) {
 		LOG_ERR("Unsupported configuration");
 		return -ENOTSUP;
 	}