diff --git a/src/northbridge/intel/haswell/northbridge.c b/src/northbridge/intel/haswell/northbridge.c
index 63cbb70..a8c8015 100644
--- a/src/northbridge/intel/haswell/northbridge.c
+++ b/src/northbridge/intel/haswell/northbridge.c
@@ -368,7 +368,7 @@
 	mmio_resource(dev, index++, (0xa0000 >> 10), (0xc0000 - 0xa0000) >> 10);
 	reserved_ram_resource(dev, index++, (0xc0000 >> 10),
 			      (0x100000 - 0xc0000) >> 10);
-#if CONFIG_CHROMEOS_RAMOOPS
+#if IS_ENABLED(CONFIG_CHROMEOS_RAMOOPS)
 	reserved_ram_resource(dev, index++,
 			CONFIG_CHROMEOS_RAMOOPS_RAM_START >> 10,
 			CONFIG_CHROMEOS_RAMOOPS_RAM_SIZE >> 10);