diff --git a/src/mainboard/nokia/ip530/Kconfig b/src/mainboard/nokia/ip530/Kconfig
index ff485cc03f..b43905f322 100644
--- a/src/mainboard/nokia/ip530/Kconfig
+++ b/src/mainboard/nokia/ip530/Kconfig
@@ -54,7 +54,7 @@ config IRQ_SLOT_COUNT
 
 ## Configuration items for the ethernet adaptors
 config DEC21143_CACHE_LINE_SIZE
-	int
+	hex
 	default 0x00000000
 	depends on BOARD_NOKIA_IP530