diff --git a/arch/mips/ath79/clock.c b/arch/mips/ath79/clock.c
index cc3a1e33a600ec7a8dd6f73ca12354955065d44d..c1102cffe37d4747ac76fe167d80363716b89d33 100644
--- a/arch/mips/ath79/clock.c
+++ b/arch/mips/ath79/clock.c
@@ -45,7 +45,7 @@ static struct clk *__init ath79_add_sys_clkdev(
 	int err;
 
 	clk = clk_register_fixed_rate(NULL, id, NULL, 0, rate);
-	if (!clk)
+	if (IS_ERR(clk))
 		panic("failed to allocate %s clock structure", id);
 
 	err = clk_register_clkdev(clk, id, NULL);