diff --git a/lib/s390x/asm/arch_def.h b/lib/s390x/asm/arch_def.h
index 7e2c5e623ab2..76f9e3862965 100644
--- a/lib/s390x/asm/arch_def.h
+++ b/lib/s390x/asm/arch_def.h
@@ -5,8 +5,8 @@
  * Authors:
  *  David Hildenbrand <david@redhat.com>
  */
-#ifndef _ASM_S390X_ARCH_DEF_H_
-#define _ASM_S390X_ARCH_DEF_H_
+#ifndef _ASMS390X_ARCH_DEF_H_
+#define _ASMS390X_ARCH_DEF_H_
 
 struct stack_frame {
 	struct stack_frame *back_chain;
diff --git a/lib/s390x/asm/barrier.h b/lib/s390x/asm/barrier.h
index 8e2fd6d90034..9534f9e8fa96 100644
--- a/lib/s390x/asm/barrier.h
+++ b/lib/s390x/asm/barrier.h
@@ -6,8 +6,8 @@
  *  Thomas Huth <thuth@redhat.com>
  *  David Hildenbrand <david@redhat.com>
  */
-#ifndef _ASM_S390X_BARRIER_H_
-#define _ASM_S390X_BARRIER_H_
+#ifndef _ASMS390X_BARRIER_H_
+#define _ASMS390X_BARRIER_H_
 
 #include <asm-generic/barrier.h>
 
diff --git a/lib/s390x/asm/cpacf.h b/lib/s390x/asm/cpacf.h
index 805fcf1a2d71..685262b0ff62 100644
--- a/lib/s390x/asm/cpacf.h
+++ b/lib/s390x/asm/cpacf.h
@@ -8,8 +8,8 @@
  *	      Harald Freudenberger (freude@de.ibm.com)
  *	      Martin Schwidefsky <schwidefsky@de.ibm.com>
  */
-#ifndef _ASM_S390_CPACF_H
-#define _ASM_S390_CPACF_H
+#ifndef _ASMS390X_CPACF_H_
+#define _ASMS390X_CPACF_H_
 
 #include <asm/facility.h>
 #include <linux/compiler.h>
@@ -471,4 +471,4 @@ static inline void cpacf_pckmo(long func, void *param)
 		: "cc", "memory");
 }
 
-#endif	/* _ASM_S390_CPACF_H */
+#endif	/* _ASMS390X_CPACF_H_ */
diff --git a/lib/s390x/asm/facility.h b/lib/s390x/asm/facility.h
index 95d4a15fe34f..ef0fd037ed35 100644
--- a/lib/s390x/asm/facility.h
+++ b/lib/s390x/asm/facility.h
@@ -5,8 +5,8 @@
  * Authors:
  *  David Hildenbrand <david@redhat.com>
  */
-#ifndef _ASM_S390X_FACILITY_H_
-#define _ASM_S390X_FACILITY_H_
+#ifndef _ASMS390X_FACILITY_H_
+#define _ASMS390X_FACILITY_H_
 
 #include <libcflat.h>
 #include <asm/facility.h>
diff --git a/lib/s390x/asm/float.h b/lib/s390x/asm/float.h
index 136794475849..eb752050b162 100644
--- a/lib/s390x/asm/float.h
+++ b/lib/s390x/asm/float.h
@@ -5,8 +5,8 @@
  * Authors:
  *  David Hildenbrand <david@redhat.com>
  */
-#ifndef _ASM_S390X_FLOAT_H_
-#define _ASM_S390X_FLOAT_H_
+#ifndef _ASMS390X_FLOAT_H_
+#define _ASMS390X_FLOAT_H_
 
 static inline void set_fpc(uint32_t fpc)
 {
diff --git a/lib/s390x/asm/mem.h b/lib/s390x/asm/mem.h
index 281390ebd816..1963cef7ec03 100644
--- a/lib/s390x/asm/mem.h
+++ b/lib/s390x/asm/mem.h
@@ -5,8 +5,8 @@
  * Copyright IBM Corp. 2018
  * Author(s): Janosch Frank <frankja@de.ibm.com>
  */
-#ifndef _ASM_S390_MEM_H
-#define _ASM_S390_MEM_H
+#ifndef _ASMS390X_MEM_H_
+#define _ASMS390X_MEM_H_
 
 #define SKEY_ACC	0xf0
 #define SKEY_FP		0x08
diff --git a/lib/s390x/asm/sigp.h b/lib/s390x/asm/sigp.h
index 00844d26d15a..61d2c6256fed 100644
--- a/lib/s390x/asm/sigp.h
+++ b/lib/s390x/asm/sigp.h
@@ -5,8 +5,8 @@
  * Copied from the Linux kernel file arch/s390/include/asm/sigp.h
  */
 
-#ifndef ASM_S390X_SIGP_H
-#define ASM_S390X_SIGP_H
+#ifndef _ASMS390X_SIGP_H_
+#define _ASMS390X_SIGP_H_
 
 /* SIGP order codes */
 #define SIGP_SENSE			1
@@ -73,4 +73,4 @@ static inline int sigp_retry(uint16_t addr, uint8_t order, unsigned long parm,
 }
 
 #endif /* __ASSEMBLER__ */
-#endif /* ASM_S390X_SIGP_H */
+#endif /* _ASMS390X_SIGP_H_ */
diff --git a/lib/s390x/asm/spinlock.h b/lib/s390x/asm/spinlock.h
index 677d2cd6e287..22d4d3899569 100644
--- a/lib/s390x/asm/spinlock.h
+++ b/lib/s390x/asm/spinlock.h
@@ -6,8 +6,8 @@
  *  Thomas Huth <thuth@redhat.com>
  *  David Hildenbrand <david@redhat.com>
  */
-#ifndef __ASMS390X_SPINLOCK_H
-#define __ASMS390X_SPINLOCK_H
+#ifndef _ASMS390X_SPINLOCK_H_
+#define _ASMS390X_SPINLOCK_H_
 
 #include <asm-generic/spinlock.h>
 
diff --git a/lib/s390x/asm/time.h b/lib/s390x/asm/time.h
index 0d67f7231992..7652a151e87a 100644
--- a/lib/s390x/asm/time.h
+++ b/lib/s390x/asm/time.h
@@ -8,8 +8,8 @@
  * Copied from the s390/intercept test by:
  *  Pierre Morel <pmorel@linux.ibm.com>
  */
-#ifndef ASM_S390X_TIME_H
-#define ASM_S390X_TIME_H
+#ifndef _ASMS390X_TIME_H_
+#define _ASMS390X_TIME_H_
 
 #define STCK_SHIFT_US	(63 - 51)
 #define STCK_MAX	((1UL << 52) - 1)
diff --git a/lib/s390x/asm/uv.h b/lib/s390x/asm/uv.h
index b22cbaa87109..dc3e02dea1b4 100644
--- a/lib/s390x/asm/uv.h
+++ b/lib/s390x/asm/uv.h
@@ -9,8 +9,8 @@
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2.
  */
-#ifndef ASM_S390X_UV_H
-#define ASM_S390X_UV_H
+#ifndef _ASMS390X_UV_H_
+#define _ASMS390X_UV_H_
 
 #define UVC_RC_EXECUTED		0x0001
 #define UVC_RC_INV_CMD		0x0002
diff --git a/lib/s390x/css.h b/lib/s390x/css.h
index 7e3d2613402e..d644971fb2b7 100644
--- a/lib/s390x/css.h
+++ b/lib/s390x/css.h
@@ -6,8 +6,8 @@
  * Author: Pierre Morel <pmorel@linux.ibm.com>
  */
 
-#ifndef CSS_H
-#define CSS_H
+#ifndef _S390X_CSS_H_
+#define _S390X_CSS_H_
 
 #define lowcore_ptr ((struct lowcore *)0x0)
 
diff --git a/lib/s390x/interrupt.h b/lib/s390x/interrupt.h
index 1973d267c2f1..99fa0beee9ad 100644
--- a/lib/s390x/interrupt.h
+++ b/lib/s390x/interrupt.h
@@ -1,5 +1,5 @@
-#ifndef INTERRUPT_H
-#define INTERRUPT_H
+#ifndef _S390X_INTERRUPT_H_
+#define _S390X_INTERRUPT_H_
 #include <asm/interrupt.h>
 
 int register_io_int_func(void (*f)(void));
diff --git a/lib/s390x/mmu.h b/lib/s390x/mmu.h
index 603f289e8e00..b995f85b839f 100644
--- a/lib/s390x/mmu.h
+++ b/lib/s390x/mmu.h
@@ -7,8 +7,8 @@
  * Authors:
  *	Janosch Frank <frankja@de.ibm.com>
  */
-#ifndef _ASMS390X_MMU_H_
-#define _ASMS390X_MMU_H_
+#ifndef _S390X_MMU_H_
+#define _S390X_MMU_H_
 
 void protect_page(void *vaddr, unsigned long prot);
 void protect_range(void *start, unsigned long len, unsigned long prot);
diff --git a/lib/s390x/sclp.h b/lib/s390x/sclp.h
index 7abf1038f5ee..28e526e2c915 100644
--- a/lib/s390x/sclp.h
+++ b/lib/s390x/sclp.h
@@ -10,8 +10,8 @@
  * Author: Christian Borntraeger <borntraeger@de.ibm.com>
  */
 
-#ifndef SCLP_H
-#define SCLP_H
+#ifndef _S390X_SCLP_H_
+#define _S390X_SCLP_H_
 
 #define SCLP_CMD_CODE_MASK                      0xffff00ff
 
@@ -329,4 +329,4 @@ void sclp_memory_setup(void);
 uint64_t get_ram_size(void);
 uint64_t get_max_ram_size(void);
 
-#endif /* SCLP_H */
+#endif /* _S390X_SCLP_H_ */
diff --git a/lib/s390x/sie.h b/lib/s390x/sie.h
index 518613baf1fa..db30d6164ab6 100644
--- a/lib/s390x/sie.h
+++ b/lib/s390x/sie.h
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-or-later */
-#ifndef SIE_H
-#define SIE_H
+#ifndef _S390X_SIE_H_
+#define _S390X_SIE_H_
 
 #define CPUSTAT_STOPPED    0x80000000
 #define CPUSTAT_WAIT       0x10000000
@@ -195,4 +195,4 @@ extern void sie_entry(void);
 extern void sie_exit(void);
 extern void sie64a(struct kvm_s390_sie_block *sblk, struct vm_save_area *save_area);
 
-#endif /* SIE_H */
+#endif /* _S390X_SIE_H_ */
diff --git a/lib/s390x/smp.h b/lib/s390x/smp.h
index 67ff16ca3c52..a2609f11e40b 100644
--- a/lib/s390x/smp.h
+++ b/lib/s390x/smp.h
@@ -7,8 +7,8 @@
  * Authors:
  *  Janosch Frank <frankja@linux.ibm.com>
  */
-#ifndef SMP_H
-#define SMP_H
+#ifndef _S390X_SMP_H_
+#define _S390X_SMP_H_
 
 #include <asm/arch_def.h>
 
diff --git a/lib/s390x/uv.h b/lib/s390x/uv.h
index 42608a967a03..2b23407a2fcf 100644
--- a/lib/s390x/uv.h
+++ b/lib/s390x/uv.h
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-or-later */
-#ifndef UV_H
-#define UV_H
+#ifndef _S390X_UV_H_
+#define _S390X_UV_H_
 
 bool uv_os_is_guest(void);
 bool uv_os_is_host(void);
diff --git a/lib/s390x/vm.h b/lib/s390x/vm.h
index 16722760cb46..7abba0ccae3d 100644
--- a/lib/s390x/vm.h
+++ b/lib/s390x/vm.h
@@ -5,9 +5,9 @@
  * Copyright (c) 2020 Red Hat Inc
  */
 
-#ifndef S390X_VM_H
-#define S390X_VM_H
+#ifndef _S390X_VM_H_
+#define _S390X_VM_H_
 
 bool vm_is_tcg(void);
 
-#endif  /* S390X_VM_H */
+#endif  /* _S390X_VM_H_ */
diff --git a/s390x/sthyi.h b/s390x/sthyi.h
index bbd74c6197c3..0a47c2385dc7 100644
--- a/s390x/sthyi.h
+++ b/s390x/sthyi.h
@@ -7,8 +7,8 @@
  * Authors:
  *    Janosch Frank <frankja@linux.vnet.ibm.com>
  */
-#ifndef _STHYI_H_
-#define _STHYI_H_
+#ifndef S390X_STHYI_H
+#define S390X_STHYI_H
 
 #include <stdint.h>
 
