diff --git a/src/northbridge/intel/haswell/memmap.h b/src/northbridge/intel/haswell/memmap.h
index 02bdecc..1aa2d67 100644
--- a/src/northbridge/intel/haswell/memmap.h
+++ b/src/northbridge/intel/haswell/memmap.h
@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
-#ifndef __NORTHBRIDGE_INTEL_HASWELL_MEMMAP_H__
-#define __NORTHBRIDGE_INTEL_HASWELL_MEMMAP_H__
+#ifndef NORTHBRIDGE_INTEL_HASWELL_MEMMAP_H
+#define NORTHBRIDGE_INTEL_HASWELL_MEMMAP_H
 
 #define GFXVT_BASE_ADDRESS	0xfed90000ULL
 #define GFXVT_BASE_SIZE		0x1000
@@ -9,4 +9,4 @@
 #define VTVC0_BASE_ADDRESS	0xfed91000ULL
 #define VTVC0_BASE_SIZE		0x1000
 
-#endif /* __NORTHBRIDGE_INTEL_HASWELL_MEMMAP_H__ */
+#endif /* NORTHBRIDGE_INTEL_HASWELL_MEMMAP_H */