diff --git a/drivers/clk/at91/sam9x60.c b/drivers/clk/at91/sam9x60.c
index e2f7244..d858c86 100644
--- a/drivers/clk/at91/sam9x60.c
+++ b/drivers/clk/at91/sam9x60.c
@@ -429,8 +429,8 @@
 	if (!base)
 		return -EINVAL;
 
-	memset(muxallocs,    0, ARRAY_SIZE(muxallocs));
-	memset(clkmuxallocs, 0, ARRAY_SIZE(clkmuxallocs));
+	memset(muxallocs,    0, sizeof(muxallocs));
+	memset(clkmuxallocs, 0, sizeof(clkmuxallocs));
 
 	ret = clk_get_by_index(dev, 0, &clk);
 	if (ret)