diff --git a/drivers/clk/bcm/clk-raspberrypi.c b/drivers/clk/bcm/clk-raspberrypi.c
index 679f4649a7ef..278f84557281 100644
--- a/drivers/clk/bcm/clk-raspberrypi.c
+++ b/drivers/clk/bcm/clk-raspberrypi.c
@@ -375,9 +375,9 @@ static int raspberrypi_discover_clocks(struct raspberrypi_clk *rpi,
 	while (clks->id) {
 		struct raspberrypi_clk_variant *variant;
 
-		if (clks->id > RPI_FIRMWARE_NUM_CLK_ID) {
+		if (clks->id >= RPI_FIRMWARE_NUM_CLK_ID) {
 			dev_err(rpi->dev, "Unknown clock id: %u (max: %u)\n",
-					   clks->id, RPI_FIRMWARE_NUM_CLK_ID);
+					   clks->id, RPI_FIRMWARE_NUM_CLK_ID - 1);
 			return -EINVAL;
 		}