diff --git a/src/mainboard/pcengines/apu2/mainboard.c b/src/mainboard/pcengines/apu2/mainboard.c
index a13ded959a..9bf58a78b9 100644
--- a/src/mainboard/pcengines/apu2/mainboard.c
+++ b/src/mainboard/pcengines/apu2/mainboard.c
@@ -169,7 +169,7 @@ static int mainboard_smbios_type16(DMI_INFO *agesa_dmi, int *handle,
 
 	t = (struct smbios_type16 *)*current;
 	len = sizeof(struct smbios_type16);
-	memset(t, 0, sizeof(struct smbios_type16));
+	memset(t, 0, len);
 	max_capacity = get_spd_offset() ? 4 : 2; /* 4GB or 2GB variant */
 
 	t->type = SMBIOS_PHYS_MEMORY_ARRAY;