diff --git a/zdump/df_s390.c b/zdump/df_s390.c
index bc614e63..f0c7075a 100644
--- a/zdump/df_s390.c
+++ b/zdump/df_s390.c
@@ -92,8 +92,6 @@ void df_s390_hdr_add(struct df_s390_hdr *hdr)
 	dfi_attr_version_set(hdr->version);
 	if (hdr->cpu_id)
 		dfi_attr_cpu_id_set(hdr->cpu_id);
-	if (hdr->build_arch)
-		dfi_attr_build_arch_set(DFI_ARCH_64);
 	if (hdr->mem_size_real)
 		dfi_attr_mem_size_real_set(hdr->mem_size_real);
 	if (hdr->real_cpu_cnt)
diff --git a/zdump/dfi.c b/zdump/dfi.c
index 3c46d899..56a9086d 100644
--- a/zdump/dfi.c
+++ b/zdump/dfi.c
@@ -67,7 +67,6 @@ struct attr {
 	struct timeval		*time_end;
 	u64			*cpu_id;
 	u64			*mem_size_real;
-	enum dfi_arch		*build_arch;
 	unsigned int		*vol_nr;
 	u32			*real_cpu_cnt;
 	struct new_utsname	*utsname;
@@ -129,9 +128,6 @@ void dfi_info_print(void)
 	}
 	if (l.attr.vol_nr)
 		STDERR("  Volume number......: %u\n", *l.attr.vol_nr);
-	if (l.attr.build_arch)
-		STDERR("  Build arch.........: %s\n",
-		       dfi_arch_str(*l.attr.build_arch));
 	STDERR("  System arch........: %s\n", dfi_arch_str(DFI_ARCH_64));
 	if (l.cpus.cnt)
 		STDERR("  CPU count (online).: %u\n", l.cpus.cnt);
@@ -434,20 +430,6 @@ u32 *dfi_attr_zlib_entsize(void)
 	return l.attr.zlib_entsize;
 }
 
-/*
- * Attribute: Build architecture
- */
-void dfi_attr_build_arch_set(enum dfi_arch build_arch)
-{
-	l.attr.build_arch = zg_alloc(sizeof(*l.attr.build_arch));
-	*l.attr.build_arch = build_arch;
-}
-
-enum dfi_arch *dfi_attr_build_arch(void)
-{
-	return l.attr.build_arch;
-}
-
 /*
  * Attribute: Real CPU count
  */
diff --git a/zdump/dfi.h b/zdump/dfi.h
index 2440e476..ddbc597e 100644
--- a/zdump/dfi.h
+++ b/zdump/dfi.h
@@ -181,9 +181,6 @@ unsigned int *dfi_attr_vol_nr(void);
 void dfi_attr_version_set(unsigned int dfi_version);
 unsigned int *dfi_attr_dfi_version(void);
 
-void dfi_attr_build_arch_set(enum dfi_arch build_arch);
-enum dfi_arch *dfi_attr_build_arch(void);
-
 void dfi_attr_real_cpu_cnt_set(u32 real_cpu_cnt);
 u32 *dfi_attr_real_cpu_cnt(void);
 
diff --git a/zdump/dfi_s390.c b/zdump/dfi_s390.c
index 9d777de6..6ddad1db 100644
--- a/zdump/dfi_s390.c
+++ b/zdump/dfi_s390.c
@@ -200,6 +200,8 @@ static int read_s390_hdr(void)
 		return -ENODEV;
 	if (l.hdr.arch != DF_S390_ARCH_64)
 		ERR_EXIT("Dump architecture is not supported!");
+	if (l.hdr.build_arch && l.hdr.build_arch != DF_S390_ARCH_64)
+		ERR_EXIT("Dump-tool build architecture is not supported!");
 	if (l.hdr.cpu_cnt > DF_S390_CPU_MAX)
 		return -ENODEV;
 	if (l.hdr.zlib_version_s390 && l.hdr.version != 2)
diff --git a/zdump/dfi_s390mv_ext.c b/zdump/dfi_s390mv_ext.c
index 80b0d565..4e539275 100644
--- a/zdump/dfi_s390mv_ext.c
+++ b/zdump/dfi_s390mv_ext.c
@@ -503,6 +503,8 @@ static int dfi_s390mv_ext_init(void)
 		zg_exit(1);
 	if (l.hdr.arch != DF_S390_ARCH_64)
 		ERR_EXIT("Dump architecture is not supported!");
+	if (l.hdr.build_arch && l.hdr.build_arch != DF_S390_ARCH_64)
+		ERR_EXIT("Dump-tool build architecture is not supported!");
 	if (l.hdr.mem_size == 0)
 		return -ENODEV;
 	df_s390_hdr_add(&l.hdr);
diff --git a/zdump/dfo_s390.c b/zdump/dfo_s390.c
index fc053535..e5224217 100644
--- a/zdump/dfo_s390.c
+++ b/zdump/dfo_s390.c
@@ -216,8 +216,6 @@ static void df_s390_dump_init(void)
 	dh->mem_size = dh->mem_end + 1;
 	dh->num_pages = dh->mem_size / PAGE_SIZE;
 	dh->arch = DF_S390_ARCH_64;
-	if (dfi_attr_build_arch())
-		dh->build_arch = DF_S390_ARCH_64;
 	dh->cpu_cnt = dfi_cpu_cnt();
 	if (dfi_cpu_content() == DFI_CPU_CONTENT_NONE)
 		dh->cpu_cnt = 0;
diff --git a/zdump/zgetdump.8 b/zdump/zgetdump.8
index a1b1973a..86f37d62 100644
--- a/zdump/zgetdump.8
+++ b/zdump/zgetdump.8
@@ -252,9 +252,6 @@ The kernel release of the Linux system.
 .BR "UTS kernel version"
 The kernel version of the Linux system.
 .TP
-.BR "Build arch"
-Architecture (s390 or s390x) on which the dump tool was built.
-.TP
 .BR "System arch"
 Architecture of the Linux system (currently only s390x is possible).
 .TP