diff --git a/src/northbridge/intel/haswell/Kconfig b/src/northbridge/intel/haswell/Kconfig
index f9c68f3..0362ffee 100644
--- a/src/northbridge/intel/haswell/Kconfig
+++ b/src/northbridge/intel/haswell/Kconfig
@@ -36,6 +36,10 @@
 	string
 	default "8086,0166"
 
+config MMCONF_BASE_ADDRESS
+	hex
+	default 0xf0000000
+
 config CACHE_MRC_SIZE_KB
 	int
 	default 512